39935740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{571}}^1$

素因数の和:862

約数の個数: 48

約数和(自身を含む): 90810720

約数和(自身を除く): 50874980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 269, 538, 571, 1076, 1142, 1345, 2284, 2690, 2855, 3497, 5380, 5710, 6994, 7423, 11420, 13988, 14846, 17485, 29692, 34970, 37115, 69940, 74230, 148460, 153599, 307198, 614396, 767995, 1535990, 1996787, 3071980, 3993574, 7987148, 9983935, 19967870, 39935740]

約数ペア:

[(1, 39935740), (2, 19967870), (4, 9983935), (5, 7987148), (10, 3993574), (13, 3071980), (20, 1996787), (26, 1535990), (52, 767995), (65, 614396), (130, 307198), (260, 153599), (269, 148460), (538, 74230), (571, 69940), (1076, 37115), (1142, 34970), (1345, 29692), (2284, 17485), (2690, 14846), (2855, 13988), (3497, 11420), (5380, 7423), (5710, 6994)]