399411940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{7207}}^1$

素因数の和:7396

約数の個数: 48

約数和(自身を含む): 893676672

約数和(自身を除く): 494264732

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 163, 170, 326, 340, 652, 815, 1630, 2771, 3260, 5542, 7207, 11084, 13855, 14414, 27710, 28828, 36035, 55420, 72070, 122519, 144140, 245038, 490076, 612595, 1174741, 1225190, 2349482, 2450380, 4698964, 5873705, 11747410, 19970597, 23494820, 39941194, 79882388, 99852985, 199705970, 399411940]

約数ペア:

[(1, 399411940), (2, 199705970), (4, 99852985), (5, 79882388), (10, 39941194), (17, 23494820), (20, 19970597), (34, 11747410), (68, 5873705), (85, 4698964), (163, 2450380), (170, 2349482), (326, 1225190), (340, 1174741), (652, 612595), (815, 490076), (1630, 245038), (2771, 144140), (3260, 122519), (5542, 72070), (7207, 55420), (11084, 36035), (13855, 28828), (14414, 27710)]