388629860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{947}}^1$

素因数の和:1061

約数の個数: 72

約数和(自身を含む): 880092864

約数和(自身を除く): 491463004

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 289, 340, 355, 578, 710, 947, 1156, 1207, 1420, 1445, 1894, 2414, 2890, 3788, 4735, 4828, 5780, 6035, 9470, 12070, 16099, 18940, 20519, 24140, 32198, 41038, 64396, 67237, 80495, 82076, 102595, 134474, 160990, 205190, 268948, 273683, 321980, 336185, 410380, 547366, 672370, 1094732, 1143029, 1344740, 1368415, 2286058, 2736830, 4572116, 5473660, 5715145, 11430290, 19431493, 22860580, 38862986, 77725972, 97157465, 194314930, 388629860]

約数ペア:

[(1, 388629860), (2, 194314930), (4, 97157465), (5, 77725972), (10, 38862986), (17, 22860580), (20, 19431493), (34, 11430290), (68, 5715145), (71, 5473660), (85, 4572116), (142, 2736830), (170, 2286058), (284, 1368415), (289, 1344740), (340, 1143029), (355, 1094732), (578, 672370), (710, 547366), (947, 410380), (1156, 336185), (1207, 321980), (1420, 273683), (1445, 268948), (1894, 205190), (2414, 160990), (2890, 134474), (3788, 102595), (4735, 82076), (4828, 80495), (5780, 67237), (6035, 64396), (9470, 41038), (12070, 32198), (16099, 24140), (18940, 20519)]