21972366

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{233}}^1$

素因数の和:298

約数の個数: 72

約数和(自身を含む): 53441856

約数和(自身を除く): 31469490

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 62, 78, 93, 117, 169, 186, 233, 234, 279, 338, 403, 466, 507, 558, 699, 806, 1014, 1209, 1398, 1521, 2097, 2418, 3029, 3042, 3627, 4194, 5239, 6058, 7223, 7254, 9087, 10478, 14446, 15717, 18174, 21669, 27261, 31434, 39377, 43338, 47151, 54522, 65007, 78754, 93899, 94302, 118131, 130014, 187798, 236262, 281697, 354393, 563394, 708786, 845091, 1220687, 1690182, 2441374, 3662061, 7324122, 10986183, 21972366]

約数ペア:

[(1, 21972366), (2, 10986183), (3, 7324122), (6, 3662061), (9, 2441374), (13, 1690182), (18, 1220687), (26, 845091), (31, 708786), (39, 563394), (62, 354393), (78, 281697), (93, 236262), (117, 187798), (169, 130014), (186, 118131), (233, 94302), (234, 93899), (279, 78754), (338, 65007), (403, 54522), (466, 47151), (507, 43338), (558, 39377), (699, 31434), (806, 27261), (1014, 21669), (1209, 18174), (1398, 15717), (1521, 14446), (2097, 10478), (2418, 9087), (3029, 7254), (3042, 7223), (3627, 6058), (4194, 5239)]