221991900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{56921}}^1$

素因数の和:56951

約数の個数: 72

約数和(自身を含む): 691716144

約数和(自身を除く): 469724244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 56921, 113842, 170763, 227684, 284605, 341526, 569210, 683052, 739973, 853815, 1138420, 1423025, 1479946, 1707630, 2219919, 2846050, 2959892, 3415260, 3699865, 4269075, 4439838, 5692100, 7399730, 8538150, 8879676, 11099595, 14799460, 17076300, 18499325, 22199190, 36998650, 44398380, 55497975, 73997300, 110995950, 221991900]

約数ペア:

[(1, 221991900), (2, 110995950), (3, 73997300), (4, 55497975), (5, 44398380), (6, 36998650), (10, 22199190), (12, 18499325), (13, 17076300), (15, 14799460), (20, 11099595), (25, 8879676), (26, 8538150), (30, 7399730), (39, 5692100), (50, 4439838), (52, 4269075), (60, 3699865), (65, 3415260), (75, 2959892), (78, 2846050), (100, 2219919), (130, 1707630), (150, 1479946), (156, 1423025), (195, 1138420), (260, 853815), (300, 739973), (325, 683052), (390, 569210), (650, 341526), (780, 284605), (975, 227684), (1300, 170763), (1950, 113842), (3900, 56921)]