81432040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{3863}}^1$

素因数の和:3922

約数の個数: 64

約数和(自身を含む): 200309760

約数和(自身を除く): 118877720

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 124, 136, 155, 170, 248, 310, 340, 527, 620, 680, 1054, 1240, 2108, 2635, 3863, 4216, 5270, 7726, 10540, 15452, 19315, 21080, 30904, 38630, 65671, 77260, 119753, 131342, 154520, 239506, 262684, 328355, 479012, 525368, 598765, 656710, 958024, 1197530, 1313420, 2035801, 2395060, 2626840, 4071602, 4790120, 8143204, 10179005, 16286408, 20358010, 40716020, 81432040]

約数ペア:

[(1, 81432040), (2, 40716020), (4, 20358010), (5, 16286408), (8, 10179005), (10, 8143204), (17, 4790120), (20, 4071602), (31, 2626840), (34, 2395060), (40, 2035801), (62, 1313420), (68, 1197530), (85, 958024), (124, 656710), (136, 598765), (155, 525368), (170, 479012), (248, 328355), (310, 262684), (340, 239506), (527, 154520), (620, 131342), (680, 119753), (1054, 77260), (1240, 65671), (2108, 38630), (2635, 30904), (3863, 21080), (4216, 19315), (5270, 15452), (7726, 10540)]