16802620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{661}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 37368576

約数和(自身を除く): 20565956

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 661, 820, 1271, 1322, 2542, 2644, 3305, 5084, 6355, 6610, 12710, 13220, 20491, 25420, 27101, 40982, 54202, 81964, 102455, 108404, 135505, 204910, 271010, 409820, 542020, 840131, 1680262, 3360524, 4200655, 8401310, 16802620]

約数ペア:

[(1, 16802620), (2, 8401310), (4, 4200655), (5, 3360524), (10, 1680262), (20, 840131), (31, 542020), (41, 409820), (62, 271010), (82, 204910), (124, 135505), (155, 108404), (164, 102455), (205, 81964), (310, 54202), (410, 40982), (620, 27101), (661, 25420), (820, 20491), (1271, 13220), (1322, 12710), (2542, 6610), (2644, 6355), (3305, 5084)]