1285289420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{15817}}^1$

素因数の和:16082

約数の個数: 48

約数和(自身を含む): 2870017920

約数和(自身を除く): 1584728500

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 239, 340, 478, 956, 1195, 2390, 4063, 4780, 8126, 15817, 16252, 20315, 31634, 40630, 63268, 79085, 81260, 158170, 268889, 316340, 537778, 1075556, 1344445, 2688890, 3780263, 5377780, 7560526, 15121052, 18901315, 37802630, 64264471, 75605260, 128528942, 257057884, 321322355, 642644710, 1285289420]

約数ペア:

[(1, 1285289420), (2, 642644710), (4, 321322355), (5, 257057884), (10, 128528942), (17, 75605260), (20, 64264471), (34, 37802630), (68, 18901315), (85, 15121052), (170, 7560526), (239, 5377780), (340, 3780263), (478, 2688890), (956, 1344445), (1195, 1075556), (2390, 537778), (4063, 316340), (4780, 268889), (8126, 158170), (15817, 81260), (16252, 79085), (20315, 63268), (31634, 40630)]