18790640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:318

約数の個数: 80

約数和(自身を含む): 48318336

約数和(自身を除く): 29527696

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 131, 163, 176, 220, 262, 326, 440, 524, 652, 655, 815, 880, 1048, 1304, 1310, 1441, 1630, 1793, 2096, 2608, 2620, 2882, 3260, 3586, 5240, 5764, 6520, 7172, 7205, 8965, 10480, 11528, 13040, 14344, 14410, 17930, 21353, 23056, 28688, 28820, 35860, 42706, 57640, 71720, 85412, 106765, 115280, 143440, 170824, 213530, 234883, 341648, 427060, 469766, 854120, 939532, 1174415, 1708240, 1879064, 2348830, 3758128, 4697660, 9395320, 18790640]

約数ペア:

[(1, 18790640), (2, 9395320), (4, 4697660), (5, 3758128), (8, 2348830), (10, 1879064), (11, 1708240), (16, 1174415), (20, 939532), (22, 854120), (40, 469766), (44, 427060), (55, 341648), (80, 234883), (88, 213530), (110, 170824), (131, 143440), (163, 115280), (176, 106765), (220, 85412), (262, 71720), (326, 57640), (440, 42706), (524, 35860), (652, 28820), (655, 28688), (815, 23056), (880, 21353), (1048, 17930), (1304, 14410), (1310, 14344), (1441, 13040), (1630, 11528), (1793, 10480), (2096, 8965), (2608, 7205), (2620, 7172), (2882, 6520), (3260, 5764), (3586, 5240)]