21687070

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 44089920

約数和(自身を除く): 22402850

約数列:

[1, 2, 5, 10, 17, 29, 34, 53, 58, 83, 85, 106, 145, 166, 170, 265, 290, 415, 493, 530, 830, 901, 986, 1411, 1537, 1802, 2407, 2465, 2822, 3074, 4399, 4505, 4814, 4930, 7055, 7685, 8798, 9010, 12035, 14110, 15370, 21995, 24070, 26129, 40919, 43990, 52258, 74783, 81838, 127571, 130645, 149566, 204595, 255142, 261290, 373915, 409190, 637855, 747830, 1275710, 2168707, 4337414, 10843535, 21687070]

約数ペア:

[(1, 21687070), (2, 10843535), (5, 4337414), (10, 2168707), (17, 1275710), (29, 747830), (34, 637855), (53, 409190), (58, 373915), (83, 261290), (85, 255142), (106, 204595), (145, 149566), (166, 130645), (170, 127571), (265, 81838), (290, 74783), (415, 52258), (493, 43990), (530, 40919), (830, 26129), (901, 24070), (986, 21995), (1411, 15370), (1537, 14110), (1802, 12035), (2407, 9010), (2465, 8798), (2822, 7685), (3074, 7055), (4399, 4930), (4505, 4814)]