644243120

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{277691}}^1$

素因数の和:277733

約数の個数: 40

約数和(自身を含む): 1549521360

約数和(自身を除く): 905278240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 277691, 555382, 1110764, 1388455, 2221528, 2776910, 4443056, 5553820, 8053039, 11107640, 16106078, 22215280, 32212156, 40265195, 64424312, 80530390, 128848624, 161060780, 322121560, 644243120]

約数ペア:

[(1, 644243120), (2, 322121560), (4, 161060780), (5, 128848624), (8, 80530390), (10, 64424312), (16, 40265195), (20, 32212156), (29, 22215280), (40, 16106078), (58, 11107640), (80, 8053039), (116, 5553820), (145, 4443056), (232, 2776910), (290, 2221528), (464, 1388455), (580, 1110764), (1160, 555382), (2320, 277691)]