28055560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{331}}^1$

素因数の和:518

約数の個数: 64

約数和(自身を含む): 68604480

約数和(自身を除く): 40548920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 163, 260, 326, 331, 520, 652, 662, 815, 1304, 1324, 1630, 1655, 2119, 2648, 3260, 3310, 4238, 4303, 6520, 6620, 8476, 8606, 10595, 13240, 16952, 17212, 21190, 21515, 34424, 42380, 43030, 53953, 84760, 86060, 107906, 172120, 215812, 269765, 431624, 539530, 701389, 1079060, 1402778, 2158120, 2805556, 3506945, 5611112, 7013890, 14027780, 28055560]

約数ペア:

[(1, 28055560), (2, 14027780), (4, 7013890), (5, 5611112), (8, 3506945), (10, 2805556), (13, 2158120), (20, 1402778), (26, 1079060), (40, 701389), (52, 539530), (65, 431624), (104, 269765), (130, 215812), (163, 172120), (260, 107906), (326, 86060), (331, 84760), (520, 53953), (652, 43030), (662, 42380), (815, 34424), (1304, 21515), (1324, 21190), (1630, 17212), (1655, 16952), (2119, 13240), (2648, 10595), (3260, 8606), (3310, 8476), (4238, 6620), (4303, 6520)]