421860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 1209600

約数和(自身を除く): 787740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 89, 158, 178, 237, 267, 316, 356, 395, 445, 474, 534, 790, 890, 948, 1068, 1185, 1335, 1580, 1780, 2370, 2670, 4740, 5340, 7031, 14062, 21093, 28124, 35155, 42186, 70310, 84372, 105465, 140620, 210930, 421860]

約数ペア:

[(1, 421860), (2, 210930), (3, 140620), (4, 105465), (5, 84372), (6, 70310), (10, 42186), (12, 35155), (15, 28124), (20, 21093), (30, 14062), (60, 7031), (79, 5340), (89, 4740), (158, 2670), (178, 2370), (237, 1780), (267, 1580), (316, 1335), (356, 1185), (395, 1068), (445, 948), (474, 890), (534, 790)]