19945440

素因数分解:

$2^5\times 3^8\times 5^1\times {\mathrm{19}}^1$

素因数の和:58

約数の個数: 216

約数和(自身を含む): 74397960

約数和(自身を除く): 54452520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 32, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 81, 90, 95, 96, 108, 114, 120, 135, 144, 152, 160, 162, 171, 180, 190, 216, 228, 240, 243, 270, 285, 288, 304, 324, 342, 360, 380, 405, 432, 456, 480, 486, 513, 540, 570, 608, 648, 684, 720, 729, 760, 810, 855, 864, 912, 972, 1026, 1080, 1140, 1215, 1296, 1368, 1440, 1458, 1520, 1539, 1620, 1710, 1824, 1944, 2052, 2160, 2187, 2280, 2430, 2565, 2592, 2736, 2916, 3040, 3078, 3240, 3420, 3645, 3888, 4104, 4320, 4374, 4560, 4617, 4860, 5130, 5472, 5832, 6156, 6480, 6561, 6840, 7290, 7695, 7776, 8208, 8748, 9120, 9234, 9720, 10260, 10935, 11664, 12312, 12960, 13122, 13680, 13851, 14580, 15390, 16416, 17496, 18468, 19440, 20520, 21870, 23085, 23328, 24624, 26244, 27360, 27702, 29160, 30780, 32805, 34992, 36936, 38880, 41040, 41553, 43740, 46170, 49248, 52488, 55404, 58320, 61560, 65610, 69255, 69984, 73872, 82080, 83106, 87480, 92340, 104976, 110808, 116640, 123120, 124659, 131220, 138510, 147744, 166212, 174960, 184680, 207765, 209952, 221616, 246240, 249318, 262440, 277020, 332424, 349920, 369360, 415530, 443232, 498636, 524880, 554040, 623295, 664848, 738720, 831060, 997272, 1049760, 1108080, 1246590, 1329696, 1662120, 1994544, 2216160, 2493180, 3324240, 3989088, 4986360, 6648480, 9972720, 19945440]

約数ペア:

[(1, 19945440), (2, 9972720), (3, 6648480), (4, 4986360), (5, 3989088), (6, 3324240), (8, 2493180), (9, 2216160), (10, 1994544), (12, 1662120), (15, 1329696), (16, 1246590), (18, 1108080), (19, 1049760), (20, 997272), (24, 831060), (27, 738720), (30, 664848), (32, 623295), (36, 554040), (38, 524880), (40, 498636), (45, 443232), (48, 415530), (54, 369360), (57, 349920), (60, 332424), (72, 277020), (76, 262440), (80, 249318), (81, 246240), (90, 221616), (95, 209952), (96, 207765), (108, 184680), (114, 174960), (120, 166212), (135, 147744), (144, 138510), (152, 131220), (160, 124659), (162, 123120), (171, 116640), (180, 110808), (190, 104976), (216, 92340), (228, 87480), (240, 83106), (243, 82080), (270, 73872), (285, 69984), (288, 69255), (304, 65610), (324, 61560), (342, 58320), (360, 55404), (380, 52488), (405, 49248), (432, 46170), (456, 43740), (480, 41553), (486, 41040), (513, 38880), (540, 36936), (570, 34992), (608, 32805), (648, 30780), (684, 29160), (720, 27702), (729, 27360), (760, 26244), (810, 24624), (855, 23328), (864, 23085), (912, 21870), (972, 20520), (1026, 19440), (1080, 18468), (1140, 17496), (1215, 16416), (1296, 15390), (1368, 14580), (1440, 13851), (1458, 13680), (1520, 13122), (1539, 12960), (1620, 12312), (1710, 11664), (1824, 10935), (1944, 10260), (2052, 9720), (2160, 9234), (2187, 9120), (2280, 8748), (2430, 8208), (2565, 7776), (2592, 7695), (2736, 7290), (2916, 6840), (3040, 6561), (3078, 6480), (3240, 6156), (3420, 5832), (3645, 5472), (3888, 5130), (4104, 4860), (4320, 4617), (4374, 4560)]