25900040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{643}}^1$

素因数の和:726

約数の個数: 64

約数和(自身を含む): 62596800

約数和(自身を除く): 36696760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 53, 76, 95, 106, 152, 190, 212, 265, 380, 424, 530, 643, 760, 1007, 1060, 1286, 2014, 2120, 2572, 3215, 4028, 5035, 5144, 6430, 8056, 10070, 12217, 12860, 20140, 24434, 25720, 34079, 40280, 48868, 61085, 68158, 97736, 122170, 136316, 170395, 244340, 272632, 340790, 488680, 647501, 681580, 1295002, 1363160, 2590004, 3237505, 5180008, 6475010, 12950020, 25900040]

約数ペア:

[(1, 25900040), (2, 12950020), (4, 6475010), (5, 5180008), (8, 3237505), (10, 2590004), (19, 1363160), (20, 1295002), (38, 681580), (40, 647501), (53, 488680), (76, 340790), (95, 272632), (106, 244340), (152, 170395), (190, 136316), (212, 122170), (265, 97736), (380, 68158), (424, 61085), (530, 48868), (643, 40280), (760, 34079), (1007, 25720), (1060, 24434), (1286, 20140), (2014, 12860), (2120, 12217), (2572, 10070), (3215, 8056), (4028, 6430), (5035, 5144)]