21128360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1549}}^1$

素因数の和:1602

約数の個数: 64

約数和(自身を含む): 53568000

約数和(自身を除く): 32439640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1549, 1705, 2728, 3098, 3410, 6196, 6820, 7745, 12392, 13640, 15490, 17039, 30980, 34078, 48019, 61960, 68156, 85195, 96038, 136312, 170390, 192076, 240095, 340780, 384152, 480190, 528209, 681560, 960380, 1056418, 1920760, 2112836, 2641045, 4225672, 5282090, 10564180, 21128360]

約数ペア:

[(1, 21128360), (2, 10564180), (4, 5282090), (5, 4225672), (8, 2641045), (10, 2112836), (11, 1920760), (20, 1056418), (22, 960380), (31, 681560), (40, 528209), (44, 480190), (55, 384152), (62, 340780), (88, 240095), (110, 192076), (124, 170390), (155, 136312), (220, 96038), (248, 85195), (310, 68156), (341, 61960), (440, 48019), (620, 34078), (682, 30980), (1240, 17039), (1364, 15490), (1549, 13640), (1705, 12392), (2728, 7745), (3098, 6820), (3410, 6196)]