140406440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{569}}^1$

素因数の和:810

約数の個数: 64

約数和(自身を含む): 328320000

約数和(自身を除く): 187913560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 199, 248, 310, 398, 569, 620, 796, 995, 1138, 1240, 1592, 1990, 2276, 2845, 3980, 4552, 5690, 6169, 7960, 11380, 12338, 17639, 22760, 24676, 30845, 35278, 49352, 61690, 70556, 88195, 113231, 123380, 141112, 176390, 226462, 246760, 352780, 452924, 566155, 705560, 905848, 1132310, 2264620, 3510161, 4529240, 7020322, 14040644, 17550805, 28081288, 35101610, 70203220, 140406440]

約数ペア:

[(1, 140406440), (2, 70203220), (4, 35101610), (5, 28081288), (8, 17550805), (10, 14040644), (20, 7020322), (31, 4529240), (40, 3510161), (62, 2264620), (124, 1132310), (155, 905848), (199, 705560), (248, 566155), (310, 452924), (398, 352780), (569, 246760), (620, 226462), (796, 176390), (995, 141112), (1138, 123380), (1240, 113231), (1592, 88195), (1990, 70556), (2276, 61690), (2845, 49352), (3980, 35278), (4552, 30845), (5690, 24676), (6169, 22760), (7960, 17639), (11380, 12338)]