197785820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{1801}}^1$

素因数の和:1863

約数の個数: 72

約数和(自身を含む): 464699760

約数和(自身を除く): 266913940

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 289, 323, 340, 380, 578, 646, 1156, 1292, 1445, 1615, 1801, 2890, 3230, 3602, 5491, 5780, 6460, 7204, 9005, 10982, 18010, 21964, 27455, 30617, 34219, 36020, 54910, 61234, 68438, 109820, 122468, 136876, 153085, 171095, 306170, 342190, 520489, 581723, 612340, 684380, 1040978, 1163446, 2081956, 2326892, 2602445, 2908615, 5204890, 5817230, 9889291, 10409780, 11634460, 19778582, 39557164, 49446455, 98892910, 197785820]

約数ペア:

[(1, 197785820), (2, 98892910), (4, 49446455), (5, 39557164), (10, 19778582), (17, 11634460), (19, 10409780), (20, 9889291), (34, 5817230), (38, 5204890), (68, 2908615), (76, 2602445), (85, 2326892), (95, 2081956), (170, 1163446), (190, 1040978), (289, 684380), (323, 612340), (340, 581723), (380, 520489), (578, 342190), (646, 306170), (1156, 171095), (1292, 153085), (1445, 136876), (1615, 122468), (1801, 109820), (2890, 68438), (3230, 61234), (3602, 54910), (5491, 36020), (5780, 34219), (6460, 30617), (7204, 27455), (9005, 21964), (10982, 18010)]