21065928

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{269}}^1$

素因数の和:542

約数の個数: 64

約数和(自身を含む): 57153600

約数和(自身を除く): 36087672

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 251, 269, 312, 502, 538, 753, 807, 1004, 1076, 1506, 1614, 2008, 2152, 3012, 3228, 3263, 3497, 6024, 6456, 6526, 6994, 9789, 10491, 13052, 13988, 19578, 20982, 26104, 27976, 39156, 41964, 67519, 78312, 83928, 135038, 202557, 270076, 405114, 540152, 810228, 877747, 1620456, 1755494, 2633241, 3510988, 5266482, 7021976, 10532964, 21065928]

約数ペア:

[(1, 21065928), (2, 10532964), (3, 7021976), (4, 5266482), (6, 3510988), (8, 2633241), (12, 1755494), (13, 1620456), (24, 877747), (26, 810228), (39, 540152), (52, 405114), (78, 270076), (104, 202557), (156, 135038), (251, 83928), (269, 78312), (312, 67519), (502, 41964), (538, 39156), (753, 27976), (807, 26104), (1004, 20982), (1076, 19578), (1506, 13988), (1614, 13052), (2008, 10491), (2152, 9789), (3012, 6994), (3228, 6526), (3263, 6456), (3497, 6024)]