19665880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{641}}^1$

素因数の和:724

約数の個数: 64

約数和(自身を含む): 48535200

約数和(自身を除く): 28869320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 59, 65, 104, 118, 130, 236, 260, 295, 472, 520, 590, 641, 767, 1180, 1282, 1534, 2360, 2564, 3068, 3205, 3835, 5128, 6136, 6410, 7670, 8333, 12820, 15340, 16666, 25640, 30680, 33332, 37819, 41665, 66664, 75638, 83330, 151276, 166660, 189095, 302552, 333320, 378190, 491647, 756380, 983294, 1512760, 1966588, 2458235, 3933176, 4916470, 9832940, 19665880]

約数ペア:

[(1, 19665880), (2, 9832940), (4, 4916470), (5, 3933176), (8, 2458235), (10, 1966588), (13, 1512760), (20, 983294), (26, 756380), (40, 491647), (52, 378190), (59, 333320), (65, 302552), (104, 189095), (118, 166660), (130, 151276), (236, 83330), (260, 75638), (295, 66664), (472, 41665), (520, 37819), (590, 33332), (641, 30680), (767, 25640), (1180, 16666), (1282, 15340), (1534, 12820), (2360, 8333), (2564, 7670), (3068, 6410), (3205, 6136), (3835, 5128)]