12354980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{631}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 28667520

約数和(自身を除く): 16312540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 631, 890, 979, 1262, 1780, 1958, 2524, 3155, 3916, 4895, 6310, 6941, 9790, 12620, 13882, 19580, 27764, 34705, 56159, 69410, 112318, 138820, 224636, 280795, 561590, 617749, 1123180, 1235498, 2470996, 3088745, 6177490, 12354980]

約数ペア:

[(1, 12354980), (2, 6177490), (4, 3088745), (5, 2470996), (10, 1235498), (11, 1123180), (20, 617749), (22, 561590), (44, 280795), (55, 224636), (89, 138820), (110, 112318), (178, 69410), (220, 56159), (356, 34705), (445, 27764), (631, 19580), (890, 13882), (979, 12620), (1262, 9790), (1780, 6941), (1958, 6310), (2524, 4895), (3155, 3916)]