61421540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{631}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 134206464

約数和(自身を除く): 72784924

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 310, 314, 620, 628, 631, 785, 1262, 1570, 2524, 3140, 3155, 4867, 6310, 9734, 12620, 19468, 19561, 24335, 39122, 48670, 78244, 97340, 97805, 99067, 195610, 198134, 391220, 396268, 495335, 990670, 1981340, 3071077, 6142154, 12284308, 15355385, 30710770, 61421540]

約数ペア:

[(1, 61421540), (2, 30710770), (4, 15355385), (5, 12284308), (10, 6142154), (20, 3071077), (31, 1981340), (62, 990670), (124, 495335), (155, 396268), (157, 391220), (310, 198134), (314, 195610), (620, 99067), (628, 97805), (631, 97340), (785, 78244), (1262, 48670), (1570, 39122), (2524, 24335), (3140, 19561), (3155, 19468), (4867, 12620), (6310, 9734)]