15820920

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:299

約数の個数: 160

約数和(自身を含む): 56192400

約数和(自身を除く): 40371480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 81, 90, 95, 108, 114, 120, 135, 152, 162, 171, 180, 190, 216, 228, 257, 270, 285, 324, 342, 360, 380, 405, 456, 513, 514, 540, 570, 648, 684, 760, 771, 810, 855, 1026, 1028, 1080, 1140, 1285, 1368, 1539, 1542, 1620, 1710, 2052, 2056, 2280, 2313, 2565, 2570, 3078, 3084, 3240, 3420, 3855, 4104, 4626, 4883, 5130, 5140, 6156, 6168, 6840, 6939, 7695, 7710, 9252, 9766, 10260, 10280, 11565, 12312, 13878, 14649, 15390, 15420, 18504, 19532, 20520, 20817, 23130, 24415, 27756, 29298, 30780, 30840, 34695, 39064, 41634, 43947, 46260, 48830, 55512, 58596, 61560, 69390, 73245, 83268, 87894, 92520, 97660, 104085, 117192, 131841, 138780, 146490, 166536, 175788, 195320, 208170, 219735, 263682, 277560, 292980, 351576, 395523, 416340, 439470, 527364, 585960, 659205, 791046, 832680, 878940, 1054728, 1318410, 1582092, 1757880, 1977615, 2636820, 3164184, 3955230, 5273640, 7910460, 15820920]

約数ペア:

[(1, 15820920), (2, 7910460), (3, 5273640), (4, 3955230), (5, 3164184), (6, 2636820), (8, 1977615), (9, 1757880), (10, 1582092), (12, 1318410), (15, 1054728), (18, 878940), (19, 832680), (20, 791046), (24, 659205), (27, 585960), (30, 527364), (36, 439470), (38, 416340), (40, 395523), (45, 351576), (54, 292980), (57, 277560), (60, 263682), (72, 219735), (76, 208170), (81, 195320), (90, 175788), (95, 166536), (108, 146490), (114, 138780), (120, 131841), (135, 117192), (152, 104085), (162, 97660), (171, 92520), (180, 87894), (190, 83268), (216, 73245), (228, 69390), (257, 61560), (270, 58596), (285, 55512), (324, 48830), (342, 46260), (360, 43947), (380, 41634), (405, 39064), (456, 34695), (513, 30840), (514, 30780), (540, 29298), (570, 27756), (648, 24415), (684, 23130), (760, 20817), (771, 20520), (810, 19532), (855, 18504), (1026, 15420), (1028, 15390), (1080, 14649), (1140, 13878), (1285, 12312), (1368, 11565), (1539, 10280), (1542, 10260), (1620, 9766), (1710, 9252), (2052, 7710), (2056, 7695), (2280, 6939), (2313, 6840), (2565, 6168), (2570, 6156), (3078, 5140), (3084, 5130), (3240, 4883), (3420, 4626), (3855, 4104)]