781123120

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{10861}}^1$

素因数の和:10934

約数の個数: 80

約数和(自身を含む): 1939518720

約数和(自身を除く): 1158395600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 40, 58, 62, 80, 116, 124, 145, 155, 232, 248, 290, 310, 464, 496, 580, 620, 899, 1160, 1240, 1798, 2320, 2480, 3596, 4495, 7192, 8990, 10861, 14384, 17980, 21722, 35960, 43444, 54305, 71920, 86888, 108610, 173776, 217220, 314969, 336691, 434440, 629938, 673382, 868880, 1259876, 1346764, 1574845, 1683455, 2519752, 2693528, 3149690, 3366910, 5039504, 5387056, 6299380, 6733820, 9764039, 12598760, 13467640, 19528078, 25197520, 26935280, 39056156, 48820195, 78112312, 97640390, 156224624, 195280780, 390561560, 781123120]

約数ペア:

[(1, 781123120), (2, 390561560), (4, 195280780), (5, 156224624), (8, 97640390), (10, 78112312), (16, 48820195), (20, 39056156), (29, 26935280), (31, 25197520), (40, 19528078), (58, 13467640), (62, 12598760), (80, 9764039), (116, 6733820), (124, 6299380), (145, 5387056), (155, 5039504), (232, 3366910), (248, 3149690), (290, 2693528), (310, 2519752), (464, 1683455), (496, 1574845), (580, 1346764), (620, 1259876), (899, 868880), (1160, 673382), (1240, 629938), (1798, 434440), (2320, 336691), (2480, 314969), (3596, 217220), (4495, 173776), (7192, 108610), (8990, 86888), (10861, 71920), (14384, 54305), (17980, 43444), (21722, 35960)]