18997470

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{991}}^1$

素因数の和:1078

約数の個数: 64

約数和(自身を含む): 51425280

約数和(自身を除く): 32427810

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 71, 90, 135, 142, 213, 270, 355, 426, 639, 710, 991, 1065, 1278, 1917, 1982, 2130, 2973, 3195, 3834, 4955, 5946, 6390, 8919, 9585, 9910, 14865, 17838, 19170, 26757, 29730, 44595, 53514, 70361, 89190, 133785, 140722, 211083, 267570, 351805, 422166, 633249, 703610, 1055415, 1266498, 1899747, 2110830, 3166245, 3799494, 6332490, 9498735, 18997470]

約数ペア:

[(1, 18997470), (2, 9498735), (3, 6332490), (5, 3799494), (6, 3166245), (9, 2110830), (10, 1899747), (15, 1266498), (18, 1055415), (27, 703610), (30, 633249), (45, 422166), (54, 351805), (71, 267570), (90, 211083), (135, 140722), (142, 133785), (213, 89190), (270, 70361), (355, 53514), (426, 44595), (639, 29730), (710, 26757), (991, 19170), (1065, 17838), (1278, 14865), (1917, 9910), (1982, 9585), (2130, 8919), (2973, 6390), (3195, 5946), (3834, 4955)]