281189840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113383}}^1$

素因数の和:113427

約数の個数: 40

約数和(自身を含む): 674861568

約数和(自身を除く): 393671728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 113383, 226766, 453532, 566915, 907064, 1133830, 1814128, 2267660, 3514873, 4535320, 7029746, 9070640, 14059492, 17574365, 28118984, 35148730, 56237968, 70297460, 140594920, 281189840]

約数ペア:

[(1, 281189840), (2, 140594920), (4, 70297460), (5, 56237968), (8, 35148730), (10, 28118984), (16, 17574365), (20, 14059492), (31, 9070640), (40, 7029746), (62, 4535320), (80, 3514873), (124, 2267660), (155, 1814128), (248, 1133830), (310, 907064), (496, 566915), (620, 453532), (1240, 226766), (2480, 113383)]