20521566

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:119

約数の個数: 128

約数和(自身を含む): 54190080

約数和(自身を除く): 33668514

約数列:

[1, 2, 3, 6, 9, 13, 18, 23, 26, 27, 31, 39, 41, 46, 54, 62, 69, 78, 82, 93, 117, 123, 138, 186, 207, 234, 246, 279, 299, 351, 369, 403, 414, 533, 558, 598, 621, 702, 713, 738, 806, 837, 897, 943, 1066, 1107, 1209, 1242, 1271, 1426, 1599, 1674, 1794, 1886, 2139, 2214, 2418, 2542, 2691, 2829, 3198, 3627, 3813, 4278, 4797, 5382, 5658, 6417, 7254, 7626, 8073, 8487, 9269, 9594, 10881, 11439, 12259, 12834, 14391, 16146, 16523, 16974, 18538, 19251, 21762, 22878, 24518, 25461, 27807, 28782, 29233, 33046, 34317, 36777, 38502, 49569, 50922, 55614, 58466, 68634, 73554, 83421, 87699, 99138, 110331, 148707, 166842, 175398, 220662, 250263, 263097, 297414, 330993, 380029, 446121, 500526, 526194, 661986, 760058, 789291, 892242, 1140087, 1578582, 2280174, 3420261, 6840522, 10260783, 20521566]

約数ペア:

[(1, 20521566), (2, 10260783), (3, 6840522), (6, 3420261), (9, 2280174), (13, 1578582), (18, 1140087), (23, 892242), (26, 789291), (27, 760058), (31, 661986), (39, 526194), (41, 500526), (46, 446121), (54, 380029), (62, 330993), (69, 297414), (78, 263097), (82, 250263), (93, 220662), (117, 175398), (123, 166842), (138, 148707), (186, 110331), (207, 99138), (234, 87699), (246, 83421), (279, 73554), (299, 68634), (351, 58466), (369, 55614), (403, 50922), (414, 49569), (533, 38502), (558, 36777), (598, 34317), (621, 33046), (702, 29233), (713, 28782), (738, 27807), (806, 25461), (837, 24518), (897, 22878), (943, 21762), (1066, 19251), (1107, 18538), (1209, 16974), (1242, 16523), (1271, 16146), (1426, 14391), (1599, 12834), (1674, 12259), (1794, 11439), (1886, 10881), (2139, 9594), (2214, 9269), (2418, 8487), (2542, 8073), (2691, 7626), (2829, 7254), (3198, 6417), (3627, 5658), (3813, 5382), (4278, 4797)]