163660120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{641}}^1$

素因数の和:1156

約数の個数: 64

約数和(自身を含む): 397988640

約数和(自身を除く): 234328520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 491, 520, 641, 982, 1282, 1964, 2455, 2564, 3205, 3928, 4910, 5128, 6383, 6410, 8333, 9820, 12766, 12820, 16666, 19640, 25532, 25640, 31915, 33332, 41665, 51064, 63830, 66664, 83330, 127660, 166660, 255320, 314731, 333320, 629462, 1258924, 1573655, 2517848, 3147310, 4091503, 6294620, 8183006, 12589240, 16366012, 20457515, 32732024, 40915030, 81830060, 163660120]

約数ペア:

[(1, 163660120), (2, 81830060), (4, 40915030), (5, 32732024), (8, 20457515), (10, 16366012), (13, 12589240), (20, 8183006), (26, 6294620), (40, 4091503), (52, 3147310), (65, 2517848), (104, 1573655), (130, 1258924), (260, 629462), (491, 333320), (520, 314731), (641, 255320), (982, 166660), (1282, 127660), (1964, 83330), (2455, 66664), (2564, 63830), (3205, 51064), (3928, 41665), (4910, 33332), (5128, 31915), (6383, 25640), (6410, 25532), (8333, 19640), (9820, 16666), (12766, 12820)]