20186985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1$

素因数の和:694

約数の個数: 64

約数和(自身を含む): 41545728

約数和(自身を除く): 21358743

約数列:

[1, 3, 5, 7, 13, 15, 21, 23, 35, 39, 65, 69, 91, 105, 115, 161, 195, 273, 299, 345, 455, 483, 643, 805, 897, 1365, 1495, 1929, 2093, 2415, 3215, 4485, 4501, 6279, 8359, 9645, 10465, 13503, 14789, 22505, 25077, 31395, 41795, 44367, 58513, 67515, 73945, 103523, 125385, 175539, 192257, 221835, 292565, 310569, 517615, 576771, 877695, 961285, 1345799, 1552845, 2883855, 4037397, 6728995, 20186985]

約数ペア:

[(1, 20186985), (3, 6728995), (5, 4037397), (7, 2883855), (13, 1552845), (15, 1345799), (21, 961285), (23, 877695), (35, 576771), (39, 517615), (65, 310569), (69, 292565), (91, 221835), (105, 192257), (115, 175539), (161, 125385), (195, 103523), (273, 73945), (299, 67515), (345, 58513), (455, 44367), (483, 41795), (643, 31395), (805, 25077), (897, 22505), (1365, 14789), (1495, 13503), (1929, 10465), (2093, 9645), (2415, 8359), (3215, 6279), (4485, 4501)]