21509982

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^2\times {\mathrm{2357}}^1$

素因数の和:2394

約数の個数: 48

約数和(自身を含む): 51781680

約数和(自身を除く): 30271698

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 169, 234, 338, 351, 507, 702, 1014, 1521, 2357, 3042, 4563, 4714, 7071, 9126, 14142, 21213, 30641, 42426, 61282, 63639, 91923, 127278, 183846, 275769, 398333, 551538, 796666, 827307, 1194999, 1654614, 2389998, 3584997, 7169994, 10754991, 21509982]

約数ペア:

[(1, 21509982), (2, 10754991), (3, 7169994), (6, 3584997), (9, 2389998), (13, 1654614), (18, 1194999), (26, 827307), (27, 796666), (39, 551538), (54, 398333), (78, 275769), (117, 183846), (169, 127278), (234, 91923), (338, 63639), (351, 61282), (507, 42426), (702, 30641), (1014, 21213), (1521, 14142), (2357, 9126), (3042, 7071), (4563, 4714)]