28045940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{401}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 63821520

約数和(自身を除く): 35775580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 269, 401, 538, 802, 1076, 1345, 1604, 2005, 2690, 3497, 4010, 5213, 5380, 6994, 8020, 10426, 13988, 17485, 20852, 26065, 34970, 52130, 69940, 104260, 107869, 215738, 431476, 539345, 1078690, 1402297, 2157380, 2804594, 5609188, 7011485, 14022970, 28045940]

約数ペア:

[(1, 28045940), (2, 14022970), (4, 7011485), (5, 5609188), (10, 2804594), (13, 2157380), (20, 1402297), (26, 1078690), (52, 539345), (65, 431476), (130, 215738), (260, 107869), (269, 104260), (401, 69940), (538, 52130), (802, 34970), (1076, 26065), (1345, 20852), (1604, 17485), (2005, 13988), (2690, 10426), (3497, 8020), (4010, 6994), (5213, 5380)]