388632740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{7043}}^1$

素因数の和:7172

約数の個数: 48

約数和(自身を含む): 852042240

約数和(自身を除く): 463409500

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1780, 2759, 5518, 7043, 11036, 13795, 14086, 27590, 28172, 35215, 55180, 70430, 140860, 218333, 436666, 626827, 873332, 1091665, 1253654, 2183330, 2507308, 3134135, 4366660, 6268270, 12536540, 19431637, 38863274, 77726548, 97158185, 194316370, 388632740]

約数ペア:

[(1, 388632740), (2, 194316370), (4, 97158185), (5, 77726548), (10, 38863274), (20, 19431637), (31, 12536540), (62, 6268270), (89, 4366660), (124, 3134135), (155, 2507308), (178, 2183330), (310, 1253654), (356, 1091665), (445, 873332), (620, 626827), (890, 436666), (1780, 218333), (2759, 140860), (5518, 70430), (7043, 55180), (11036, 35215), (13795, 28172), (14086, 27590)]