20553950

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{293}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 40684896

約数和(自身を除く): 20130946

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 61, 115, 122, 230, 293, 305, 575, 586, 610, 1150, 1403, 1465, 1525, 2806, 2930, 3050, 6739, 7015, 7325, 13478, 14030, 14650, 17873, 33695, 35075, 35746, 67390, 70150, 89365, 168475, 178730, 336950, 411079, 446825, 822158, 893650, 2055395, 4110790, 10276975, 20553950]

約数ペア:

[(1, 20553950), (2, 10276975), (5, 4110790), (10, 2055395), (23, 893650), (25, 822158), (46, 446825), (50, 411079), (61, 336950), (115, 178730), (122, 168475), (230, 89365), (293, 70150), (305, 67390), (575, 35746), (586, 35075), (610, 33695), (1150, 17873), (1403, 14650), (1465, 14030), (1525, 13478), (2806, 7325), (2930, 7015), (3050, 6739)]