19998681880

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{167381}}^1$

素因数の和:167524

約数の個数: 64

約数和(自身を含む): 47000865600

約数和(自身を除く): 27002183720

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 103, 116, 145, 206, 232, 290, 412, 515, 580, 824, 1030, 1160, 2060, 2987, 4120, 5974, 11948, 14935, 23896, 29870, 59740, 119480, 167381, 334762, 669524, 836905, 1339048, 1673810, 3347620, 4854049, 6695240, 9708098, 17240243, 19416196, 24270245, 34480486, 38832392, 48540490, 68960972, 86201215, 97080980, 137921944, 172402430, 194161960, 344804860, 499967047, 689609720, 999934094, 1999868188, 2499835235, 3999736376, 4999670470, 9999340940, 19998681880]

約数ペア:

[(1, 19998681880), (2, 9999340940), (4, 4999670470), (5, 3999736376), (8, 2499835235), (10, 1999868188), (20, 999934094), (29, 689609720), (40, 499967047), (58, 344804860), (103, 194161960), (116, 172402430), (145, 137921944), (206, 97080980), (232, 86201215), (290, 68960972), (412, 48540490), (515, 38832392), (580, 34480486), (824, 24270245), (1030, 19416196), (1160, 17240243), (2060, 9708098), (2987, 6695240), (4120, 4854049), (5974, 3347620), (11948, 1673810), (14935, 1339048), (23896, 836905), (29870, 669524), (59740, 334762), (119480, 167381)]