20619756

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 54132624

約数和(自身を除く): 33512868

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 101, 106, 107, 159, 202, 212, 214, 303, 318, 321, 404, 428, 477, 606, 636, 642, 909, 954, 963, 1212, 1284, 1818, 1908, 1926, 3636, 3852, 5353, 5671, 10706, 10807, 11342, 16059, 17013, 21412, 21614, 22684, 32118, 32421, 34026, 43228, 48177, 51039, 64236, 64842, 68052, 96354, 97263, 102078, 129684, 192708, 194526, 204156, 389052, 572771, 1145542, 1718313, 2291084, 3436626, 5154939, 6873252, 10309878, 20619756]

約数ペア:

[(1, 20619756), (2, 10309878), (3, 6873252), (4, 5154939), (6, 3436626), (9, 2291084), (12, 1718313), (18, 1145542), (36, 572771), (53, 389052), (101, 204156), (106, 194526), (107, 192708), (159, 129684), (202, 102078), (212, 97263), (214, 96354), (303, 68052), (318, 64842), (321, 64236), (404, 51039), (428, 48177), (477, 43228), (606, 34026), (636, 32421), (642, 32118), (909, 22684), (954, 21614), (963, 21412), (1212, 17013), (1284, 16059), (1818, 11342), (1908, 10807), (1926, 10706), (3636, 5671), (3852, 5353)]