21258480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{877}}^1$

素因数の和:994

約数の個数: 80

約数和(自身を含む): 66629664

約数和(自身を除く): 45371184

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 101, 120, 202, 240, 303, 404, 505, 606, 808, 877, 1010, 1212, 1515, 1616, 1754, 2020, 2424, 2631, 3030, 3508, 4040, 4385, 4848, 5262, 6060, 7016, 8080, 8770, 10524, 12120, 13155, 14032, 17540, 21048, 24240, 26310, 35080, 42096, 52620, 70160, 88577, 105240, 177154, 210480, 265731, 354308, 442885, 531462, 708616, 885770, 1062924, 1328655, 1417232, 1771540, 2125848, 2657310, 3543080, 4251696, 5314620, 7086160, 10629240, 21258480]

約数ペア:

[(1, 21258480), (2, 10629240), (3, 7086160), (4, 5314620), (5, 4251696), (6, 3543080), (8, 2657310), (10, 2125848), (12, 1771540), (15, 1417232), (16, 1328655), (20, 1062924), (24, 885770), (30, 708616), (40, 531462), (48, 442885), (60, 354308), (80, 265731), (101, 210480), (120, 177154), (202, 105240), (240, 88577), (303, 70160), (404, 52620), (505, 42096), (606, 35080), (808, 26310), (877, 24240), (1010, 21048), (1212, 17540), (1515, 14032), (1616, 13155), (1754, 12120), (2020, 10524), (2424, 8770), (2631, 8080), (3030, 7016), (3508, 6060), (4040, 5262), (4385, 4848)]