21510405

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2969}}^1$

素因数の和:3010

約数の個数: 48

約数和(自身を含む): 44478720

約数和(自身を除く): 22968315

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 63, 69, 105, 115, 161, 207, 315, 345, 483, 805, 1035, 1449, 2415, 2969, 7245, 8907, 14845, 20783, 26721, 44535, 62349, 68287, 103915, 133605, 187047, 204861, 311745, 341435, 478009, 614583, 935235, 1024305, 1434027, 2390045, 3072915, 4302081, 7170135, 21510405]

約数ペア:

[(1, 21510405), (3, 7170135), (5, 4302081), (7, 3072915), (9, 2390045), (15, 1434027), (21, 1024305), (23, 935235), (35, 614583), (45, 478009), (63, 341435), (69, 311745), (105, 204861), (115, 187047), (161, 133605), (207, 103915), (315, 68287), (345, 62349), (483, 44535), (805, 26721), (1035, 20783), (1449, 14845), (2415, 8907), (2969, 7245)]