131211220

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:678

約数の個数: 96

約数和(自身を含む): 332236800

約数和(自身を除く): 201025580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 343, 434, 490, 617, 620, 686, 868, 980, 1085, 1234, 1372, 1519, 1715, 2170, 2468, 3038, 3085, 3430, 4319, 4340, 6076, 6170, 6860, 7595, 8638, 10633, 12340, 15190, 17276, 19127, 21266, 21595, 30233, 30380, 38254, 42532, 43190, 53165, 60466, 76508, 86380, 95635, 106330, 120932, 133889, 151165, 191270, 211631, 212660, 267778, 302330, 382540, 423262, 535556, 604660, 669445, 846524, 937223, 1058155, 1338890, 1874446, 2116310, 2677780, 3748892, 4232620, 4686115, 6560561, 9372230, 13121122, 18744460, 26242244, 32802805, 65605610, 131211220]

約数ペア:

[(1, 131211220), (2, 65605610), (4, 32802805), (5, 26242244), (7, 18744460), (10, 13121122), (14, 9372230), (20, 6560561), (28, 4686115), (31, 4232620), (35, 3748892), (49, 2677780), (62, 2116310), (70, 1874446), (98, 1338890), (124, 1058155), (140, 937223), (155, 846524), (196, 669445), (217, 604660), (245, 535556), (310, 423262), (343, 382540), (434, 302330), (490, 267778), (617, 212660), (620, 211631), (686, 191270), (868, 151165), (980, 133889), (1085, 120932), (1234, 106330), (1372, 95635), (1519, 86380), (1715, 76508), (2170, 60466), (2468, 53165), (3038, 43190), (3085, 42532), (3430, 38254), (4319, 30380), (4340, 30233), (6076, 21595), (6170, 21266), (6860, 19127), (7595, 17276), (8638, 15190), (10633, 12340)]