90018760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{523}}^1$

素因数の和:878

約数の個数: 64

約数和(自身を含む): 219199680

約数和(自身を除く): 129180920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 331, 520, 523, 662, 1046, 1324, 1655, 2092, 2615, 2648, 3310, 4184, 4303, 5230, 6620, 6799, 8606, 10460, 13240, 13598, 17212, 20920, 21515, 27196, 33995, 34424, 43030, 54392, 67990, 86060, 135980, 172120, 173113, 271960, 346226, 692452, 865565, 1384904, 1731130, 2250469, 3462260, 4500938, 6924520, 9001876, 11252345, 18003752, 22504690, 45009380, 90018760]

約数ペア:

[(1, 90018760), (2, 45009380), (4, 22504690), (5, 18003752), (8, 11252345), (10, 9001876), (13, 6924520), (20, 4500938), (26, 3462260), (40, 2250469), (52, 1731130), (65, 1384904), (104, 865565), (130, 692452), (260, 346226), (331, 271960), (520, 173113), (523, 172120), (662, 135980), (1046, 86060), (1324, 67990), (1655, 54392), (2092, 43030), (2615, 34424), (2648, 33995), (3310, 27196), (4184, 21515), (4303, 20920), (5230, 17212), (6620, 13598), (6799, 13240), (8606, 10460)]