18992780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{331}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 42389760

約数和(自身を除く): 23396980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 151, 190, 302, 331, 380, 604, 662, 755, 1324, 1510, 1655, 2869, 3020, 3310, 5738, 6289, 6620, 11476, 12578, 14345, 25156, 28690, 31445, 49981, 57380, 62890, 99962, 125780, 199924, 249905, 499810, 949639, 999620, 1899278, 3798556, 4748195, 9496390, 18992780]

約数ペア:

[(1, 18992780), (2, 9496390), (4, 4748195), (5, 3798556), (10, 1899278), (19, 999620), (20, 949639), (38, 499810), (76, 249905), (95, 199924), (151, 125780), (190, 99962), (302, 62890), (331, 57380), (380, 49981), (604, 31445), (662, 28690), (755, 25156), (1324, 14345), (1510, 12578), (1655, 11476), (2869, 6620), (3020, 6289), (3310, 5738)]