20271220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 24181580

約数列:

[1, 2, 4, 5, 10, 20, 41, 59, 82, 118, 164, 205, 236, 295, 410, 419, 590, 820, 838, 1180, 1676, 2095, 2419, 4190, 4838, 8380, 9676, 12095, 17179, 24190, 24721, 34358, 48380, 49442, 68716, 85895, 98884, 123605, 171790, 247210, 343580, 494420, 1013561, 2027122, 4054244, 5067805, 10135610, 20271220]

約数ペア:

[(1, 20271220), (2, 10135610), (4, 5067805), (5, 4054244), (10, 2027122), (20, 1013561), (41, 494420), (59, 343580), (82, 247210), (118, 171790), (164, 123605), (205, 98884), (236, 85895), (295, 68716), (410, 49442), (419, 48380), (590, 34358), (820, 24721), (838, 24190), (1180, 17179), (1676, 12095), (2095, 9676), (2419, 8380), (4190, 4838)]