1901240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 4860000

約数和(自身を除く): 2958760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 149, 220, 232, 290, 298, 319, 440, 580, 596, 638, 745, 1160, 1192, 1276, 1490, 1595, 1639, 2552, 2980, 3190, 3278, 4321, 5960, 6380, 6556, 8195, 8642, 12760, 13112, 16390, 17284, 21605, 32780, 34568, 43210, 47531, 65560, 86420, 95062, 172840, 190124, 237655, 380248, 475310, 950620, 1901240]

約数ペア:

[(1, 1901240), (2, 950620), (4, 475310), (5, 380248), (8, 237655), (10, 190124), (11, 172840), (20, 95062), (22, 86420), (29, 65560), (40, 47531), (44, 43210), (55, 34568), (58, 32780), (88, 21605), (110, 17284), (116, 16390), (145, 13112), (149, 12760), (220, 8642), (232, 8195), (290, 6556), (298, 6380), (319, 5960), (440, 4321), (580, 3278), (596, 3190), (638, 2980), (745, 2552), (1160, 1639), (1192, 1595), (1276, 1490)]