28827700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{359}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 69370560

約数和(自身を除く): 40542860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 73, 100, 110, 146, 220, 275, 292, 359, 365, 550, 718, 730, 803, 1100, 1436, 1460, 1606, 1795, 1825, 3212, 3590, 3650, 3949, 4015, 7180, 7300, 7898, 8030, 8975, 15796, 16060, 17950, 19745, 20075, 26207, 35900, 39490, 40150, 52414, 78980, 80300, 98725, 104828, 131035, 197450, 262070, 288277, 394900, 524140, 576554, 655175, 1153108, 1310350, 1441385, 2620700, 2882770, 5765540, 7206925, 14413850, 28827700]

約数ペア:

[(1, 28827700), (2, 14413850), (4, 7206925), (5, 5765540), (10, 2882770), (11, 2620700), (20, 1441385), (22, 1310350), (25, 1153108), (44, 655175), (50, 576554), (55, 524140), (73, 394900), (100, 288277), (110, 262070), (146, 197450), (220, 131035), (275, 104828), (292, 98725), (359, 80300), (365, 78980), (550, 52414), (718, 40150), (730, 39490), (803, 35900), (1100, 26207), (1436, 20075), (1460, 19745), (1606, 17950), (1795, 16060), (1825, 15796), (3212, 8975), (3590, 8030), (3650, 7898), (3949, 7300), (4015, 7180)]