251246320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7793}}^1$

素因数の和:7850

約数の個数: 80

約数和(自身を含む): 649458432

約数和(自身を除く): 398212112

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 7793, 8060, 15586, 16120, 31172, 32240, 38965, 62344, 77930, 101309, 124688, 155860, 202618, 241583, 311720, 405236, 483166, 506545, 623440, 810472, 966332, 1013090, 1207915, 1620944, 1932664, 2026180, 2415830, 3140579, 3865328, 4052360, 4831660, 6281158, 8104720, 9663320, 12562316, 15702895, 19326640, 25124632, 31405790, 50249264, 62811580, 125623160, 251246320]

約数ペア:

[(1, 251246320), (2, 125623160), (4, 62811580), (5, 50249264), (8, 31405790), (10, 25124632), (13, 19326640), (16, 15702895), (20, 12562316), (26, 9663320), (31, 8104720), (40, 6281158), (52, 4831660), (62, 4052360), (65, 3865328), (80, 3140579), (104, 2415830), (124, 2026180), (130, 1932664), (155, 1620944), (208, 1207915), (248, 1013090), (260, 966332), (310, 810472), (403, 623440), (496, 506545), (520, 483166), (620, 405236), (806, 311720), (1040, 241583), (1240, 202618), (1612, 155860), (2015, 124688), (2480, 101309), (3224, 77930), (4030, 62344), (6448, 38965), (7793, 32240), (8060, 31172), (15586, 16120)]