154178540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{631}}^1\times {\mathrm{643}}^1$

素因数の和:1302

約数の個数: 48

約数和(自身を含む): 341886720

約数和(自身を除く): 187708180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 631, 643, 1262, 1286, 2524, 2572, 3155, 3215, 6310, 6430, 11989, 12217, 12620, 12860, 23978, 24434, 47956, 48868, 59945, 61085, 119890, 122170, 239780, 244340, 405733, 811466, 1622932, 2028665, 4057330, 7708927, 8114660, 15417854, 30835708, 38544635, 77089270, 154178540]

約数ペア:

[(1, 154178540), (2, 77089270), (4, 38544635), (5, 30835708), (10, 15417854), (19, 8114660), (20, 7708927), (38, 4057330), (76, 2028665), (95, 1622932), (190, 811466), (380, 405733), (631, 244340), (643, 239780), (1262, 122170), (1286, 119890), (2524, 61085), (2572, 59945), (3155, 48868), (3215, 47956), (6310, 24434), (6430, 23978), (11989, 12860), (12217, 12620)]