245630320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{919}}^1$

素因数の和:1202

約数の個数: 80

約数和(自身を含む): 618085440

約数和(自身を除く): 372455120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 257, 260, 514, 520, 919, 1028, 1040, 1285, 1838, 2056, 2570, 3341, 3676, 4112, 4595, 5140, 6682, 7352, 9190, 10280, 11947, 13364, 14704, 16705, 18380, 20560, 23894, 26728, 33410, 36760, 47788, 53456, 59735, 66820, 73520, 95576, 119470, 133640, 191152, 236183, 238940, 267280, 472366, 477880, 944732, 955760, 1180915, 1889464, 2361830, 3070379, 3778928, 4723660, 6140758, 9447320, 12281516, 15351895, 18894640, 24563032, 30703790, 49126064, 61407580, 122815160, 245630320]

約数ペア:

[(1, 245630320), (2, 122815160), (4, 61407580), (5, 49126064), (8, 30703790), (10, 24563032), (13, 18894640), (16, 15351895), (20, 12281516), (26, 9447320), (40, 6140758), (52, 4723660), (65, 3778928), (80, 3070379), (104, 2361830), (130, 1889464), (208, 1180915), (257, 955760), (260, 944732), (514, 477880), (520, 472366), (919, 267280), (1028, 238940), (1040, 236183), (1285, 191152), (1838, 133640), (2056, 119470), (2570, 95576), (3341, 73520), (3676, 66820), (4112, 59735), (4595, 53456), (5140, 47788), (6682, 36760), (7352, 33410), (9190, 26728), (10280, 23894), (11947, 20560), (13364, 18380), (14704, 16705)]