21551145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 44015616

約数和(自身を除く): 22464471

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 47, 55, 77, 105, 141, 165, 231, 235, 329, 385, 397, 517, 705, 987, 1155, 1191, 1551, 1645, 1985, 2585, 2779, 3619, 4367, 4935, 5955, 7755, 8337, 10857, 13101, 13895, 18095, 18659, 21835, 30569, 41685, 54285, 55977, 65505, 91707, 93295, 130613, 152845, 205249, 279885, 391839, 458535, 615747, 653065, 1026245, 1436743, 1959195, 3078735, 4310229, 7183715, 21551145]

約数ペア:

[(1, 21551145), (3, 7183715), (5, 4310229), (7, 3078735), (11, 1959195), (15, 1436743), (21, 1026245), (33, 653065), (35, 615747), (47, 458535), (55, 391839), (77, 279885), (105, 205249), (141, 152845), (165, 130613), (231, 93295), (235, 91707), (329, 65505), (385, 55977), (397, 54285), (517, 41685), (705, 30569), (987, 21835), (1155, 18659), (1191, 18095), (1551, 13895), (1645, 13101), (1985, 10857), (2585, 8337), (2779, 7755), (3619, 5955), (4367, 4935)]