20309960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1489}}^1$

素因数の和:1542

約数の個数: 64

約数和(自身を含む): 51494400

約数和(自身を除く): 31184440

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, 1489, 1705, 2728, 2978, 3410, 5956, 6820, 7445, 11912, 13640, 14890, 16379, 29780, 32758, 46159, 59560, 65516, 81895, 92318, 131032, 163790, 184636, 230795, 327580, 369272, 461590, 507749, 655160, 923180, 1015498, 1846360, 2030996, 2538745, 4061992, 5077490, 10154980, 20309960]

約数ペア:

[(1, 20309960), (2, 10154980), (4, 5077490), (5, 4061992), (8, 2538745), (10, 2030996), (11, 1846360), (20, 1015498), (22, 923180), (31, 655160), (40, 507749), (44, 461590), (55, 369272), (62, 327580), (88, 230795), (110, 184636), (124, 163790), (155, 131032), (220, 92318), (248, 81895), (310, 65516), (341, 59560), (440, 46159), (620, 32758), (682, 29780), (1240, 16379), (1364, 14890), (1489, 13640), (1705, 11912), (2728, 7445), (2978, 6820), (3410, 5956)]