21712128520

素因数分解:

$2^3\times 5^1\times {\mathrm{6361}}^1\times {\mathrm{85333}}^1$

素因数の和:91705

約数の個数: 32

約数和(自身を含む): 48860541720

約数和(自身を除く): 27148413200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6361, 12722, 25444, 31805, 50888, 63610, 85333, 127220, 170666, 254440, 341332, 426665, 682664, 853330, 1706660, 3413320, 542803213, 1085606426, 2171212852, 2714016065, 4342425704, 5428032130, 10856064260, 21712128520]

約数ペア:

[(1, 21712128520), (2, 10856064260), (4, 5428032130), (5, 4342425704), (8, 2714016065), (10, 2171212852), (20, 1085606426), (40, 542803213), (6361, 3413320), (12722, 1706660), (25444, 853330), (31805, 682664), (50888, 426665), (63610, 341332), (85333, 254440), (127220, 170666)]