21259920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{8053}}^1$

素因数の和:8080

約数の個数: 80

約数和(自身を含む): 71906112

約数和(自身を除く): 50646192

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 8053, 16106, 24159, 32212, 40265, 48318, 64424, 80530, 88583, 96636, 120795, 128848, 161060, 177166, 193272, 241590, 265749, 322120, 354332, 386544, 442915, 483180, 531498, 644240, 708664, 885830, 966360, 1062996, 1328745, 1417328, 1771660, 1932720, 2125992, 2657490, 3543320, 4251984, 5314980, 7086640, 10629960, 21259920]

約数ペア:

[(1, 21259920), (2, 10629960), (3, 7086640), (4, 5314980), (5, 4251984), (6, 3543320), (8, 2657490), (10, 2125992), (11, 1932720), (12, 1771660), (15, 1417328), (16, 1328745), (20, 1062996), (22, 966360), (24, 885830), (30, 708664), (33, 644240), (40, 531498), (44, 483180), (48, 442915), (55, 386544), (60, 354332), (66, 322120), (80, 265749), (88, 241590), (110, 193272), (120, 177166), (132, 161060), (165, 128848), (176, 120795), (220, 96636), (240, 88583), (264, 80530), (330, 64424), (440, 48318), (528, 40265), (660, 32212), (880, 24159), (1320, 16106), (2640, 8053)]