20555010

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:165

約数の個数: 144

約数和(自身を含む): 64022400

約数和(自身を除く): 43467390

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 59, 63, 70, 79, 90, 98, 105, 118, 126, 147, 158, 177, 210, 237, 245, 294, 295, 315, 354, 395, 413, 441, 474, 490, 531, 553, 590, 630, 711, 735, 790, 826, 882, 885, 1062, 1106, 1185, 1239, 1422, 1470, 1659, 1770, 2065, 2205, 2370, 2478, 2655, 2765, 2891, 3318, 3555, 3717, 3871, 4130, 4410, 4661, 4977, 5310, 5530, 5782, 6195, 7110, 7434, 7742, 8295, 8673, 9322, 9954, 11613, 12390, 13983, 14455, 16590, 17346, 18585, 19355, 23226, 23305, 24885, 26019, 27966, 28910, 32627, 34839, 37170, 38710, 41949, 43365, 46610, 49770, 52038, 58065, 65254, 69678, 69915, 83898, 86730, 97881, 116130, 130095, 139830, 163135, 174195, 195762, 209745, 228389, 260190, 293643, 326270, 348390, 419490, 456778, 489405, 587286, 685167, 978810, 1141945, 1370334, 1468215, 2055501, 2283890, 2936430, 3425835, 4111002, 6851670, 10277505, 20555010]

約数ペア:

[(1, 20555010), (2, 10277505), (3, 6851670), (5, 4111002), (6, 3425835), (7, 2936430), (9, 2283890), (10, 2055501), (14, 1468215), (15, 1370334), (18, 1141945), (21, 978810), (30, 685167), (35, 587286), (42, 489405), (45, 456778), (49, 419490), (59, 348390), (63, 326270), (70, 293643), (79, 260190), (90, 228389), (98, 209745), (105, 195762), (118, 174195), (126, 163135), (147, 139830), (158, 130095), (177, 116130), (210, 97881), (237, 86730), (245, 83898), (294, 69915), (295, 69678), (315, 65254), (354, 58065), (395, 52038), (413, 49770), (441, 46610), (474, 43365), (490, 41949), (531, 38710), (553, 37170), (590, 34839), (630, 32627), (711, 28910), (735, 27966), (790, 26019), (826, 24885), (882, 23305), (885, 23226), (1062, 19355), (1106, 18585), (1185, 17346), (1239, 16590), (1422, 14455), (1470, 13983), (1659, 12390), (1770, 11613), (2065, 9954), (2205, 9322), (2370, 8673), (2478, 8295), (2655, 7742), (2765, 7434), (2891, 7110), (3318, 6195), (3555, 5782), (3717, 5530), (3871, 5310), (4130, 4977), (4410, 4661)]