28111980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1567}}^1$

素因数の和:1615

約数の個数: 96

約数和(自身を含む): 88510464

約数和(自身を除く): 60398484

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 23, 26, 30, 39, 46, 52, 60, 65, 69, 78, 92, 115, 130, 138, 156, 195, 230, 260, 276, 299, 345, 390, 460, 598, 690, 780, 897, 1196, 1380, 1495, 1567, 1794, 2990, 3134, 3588, 4485, 4701, 5980, 6268, 7835, 8970, 9402, 15670, 17940, 18804, 20371, 23505, 31340, 36041, 40742, 47010, 61113, 72082, 81484, 94020, 101855, 108123, 122226, 144164, 180205, 203710, 216246, 244452, 305565, 360410, 407420, 432492, 468533, 540615, 611130, 720820, 937066, 1081230, 1222260, 1405599, 1874132, 2162460, 2342665, 2811198, 4685330, 5622396, 7027995, 9370660, 14055990, 28111980]

約数ペア:

[(1, 28111980), (2, 14055990), (3, 9370660), (4, 7027995), (5, 5622396), (6, 4685330), (10, 2811198), (12, 2342665), (13, 2162460), (15, 1874132), (20, 1405599), (23, 1222260), (26, 1081230), (30, 937066), (39, 720820), (46, 611130), (52, 540615), (60, 468533), (65, 432492), (69, 407420), (78, 360410), (92, 305565), (115, 244452), (130, 216246), (138, 203710), (156, 180205), (195, 144164), (230, 122226), (260, 108123), (276, 101855), (299, 94020), (345, 81484), (390, 72082), (460, 61113), (598, 47010), (690, 40742), (780, 36041), (897, 31340), (1196, 23505), (1380, 20371), (1495, 18804), (1567, 17940), (1794, 15670), (2990, 9402), (3134, 8970), (3588, 7835), (4485, 6268), (4701, 5980)]