21481425

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{593}}^1$

素因数の和:639

約数の個数: 72

約数和(自身を含む): 45961344

約数和(自身を除く): 24479919

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 25, 35, 45, 63, 69, 75, 105, 115, 161, 175, 207, 225, 315, 345, 483, 525, 575, 593, 805, 1035, 1449, 1575, 1725, 1779, 2415, 2965, 4025, 4151, 5175, 5337, 7245, 8895, 12075, 12453, 13639, 14825, 20755, 26685, 36225, 37359, 40917, 44475, 62265, 68195, 95473, 103775, 122751, 133425, 186795, 204585, 286419, 311325, 340975, 477365, 613755, 859257, 933975, 1022925, 1432095, 2386825, 3068775, 4296285, 7160475, 21481425]

約数ペア:

[(1, 21481425), (3, 7160475), (5, 4296285), (7, 3068775), (9, 2386825), (15, 1432095), (21, 1022925), (23, 933975), (25, 859257), (35, 613755), (45, 477365), (63, 340975), (69, 311325), (75, 286419), (105, 204585), (115, 186795), (161, 133425), (175, 122751), (207, 103775), (225, 95473), (315, 68195), (345, 62265), (483, 44475), (525, 40917), (575, 37359), (593, 36225), (805, 26685), (1035, 20755), (1449, 14825), (1575, 13639), (1725, 12453), (1779, 12075), (2415, 8895), (2965, 7245), (4025, 5337), (4151, 5175)]