20251764

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{397}}^1$

素因数の和:529

約数の個数: 72

約数和(自身を含む): 55775720

約数和(自身を除く): 35523956

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 109, 117, 156, 218, 234, 327, 397, 436, 468, 654, 794, 981, 1191, 1308, 1417, 1588, 1962, 2382, 2834, 3573, 3924, 4251, 4764, 5161, 5668, 7146, 8502, 10322, 12753, 14292, 15483, 17004, 20644, 25506, 30966, 43273, 46449, 51012, 61932, 86546, 92898, 129819, 173092, 185796, 259638, 389457, 519276, 562549, 778914, 1125098, 1557828, 1687647, 2250196, 3375294, 5062941, 6750588, 10125882, 20251764]

約数ペア:

[(1, 20251764), (2, 10125882), (3, 6750588), (4, 5062941), (6, 3375294), (9, 2250196), (12, 1687647), (13, 1557828), (18, 1125098), (26, 778914), (36, 562549), (39, 519276), (52, 389457), (78, 259638), (109, 185796), (117, 173092), (156, 129819), (218, 92898), (234, 86546), (327, 61932), (397, 51012), (436, 46449), (468, 43273), (654, 30966), (794, 25506), (981, 20644), (1191, 17004), (1308, 15483), (1417, 14292), (1588, 12753), (1962, 10322), (2382, 8502), (2834, 7146), (3573, 5668), (3924, 5161), (4251, 4764)]