28305209840

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{659}}^1\times {\mathrm{1223}}^1$

素因数の和:2334

約数の個数: 80

約数和(自身を含む): 66113625600

約数和(自身を除く): 37808415760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 659, 878, 1223, 1318, 1756, 2195, 2446, 2636, 3295, 3512, 4390, 4892, 5272, 6115, 6590, 7024, 8780, 9784, 10544, 12230, 13180, 17560, 19568, 24460, 26360, 35120, 48920, 52720, 97840, 289301, 536897, 578602, 805957, 1073794, 1157204, 1446505, 1611914, 2147588, 2314408, 2684485, 2893010, 3223828, 4029785, 4295176, 4628816, 5368970, 5786020, 6447656, 8059570, 8590352, 10737940, 11572040, 12895312, 16119140, 21475880, 23144080, 32238280, 42951760, 64476560, 353815123, 707630246, 1415260492, 1769075615, 2830520984, 3538151230, 5661041968, 7076302460, 14152604920, 28305209840]

約数ペア:

[(1, 28305209840), (2, 14152604920), (4, 7076302460), (5, 5661041968), (8, 3538151230), (10, 2830520984), (16, 1769075615), (20, 1415260492), (40, 707630246), (80, 353815123), (439, 64476560), (659, 42951760), (878, 32238280), (1223, 23144080), (1318, 21475880), (1756, 16119140), (2195, 12895312), (2446, 11572040), (2636, 10737940), (3295, 8590352), (3512, 8059570), (4390, 6447656), (4892, 5786020), (5272, 5368970), (6115, 4628816), (6590, 4295176), (7024, 4029785), (8780, 3223828), (9784, 2893010), (10544, 2684485), (12230, 2314408), (13180, 2147588), (17560, 1611914), (19568, 1446505), (24460, 1157204), (26360, 1073794), (35120, 805957), (48920, 578602), (52720, 536897), (97840, 289301)]