820071520

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{1637}}^1$

素因数の和:1784

約数の個数: 96

約数和(自身を含む): 2020951296

約数和(自身を除く): 1200879776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 101, 124, 155, 160, 202, 248, 310, 404, 496, 505, 620, 808, 992, 1010, 1240, 1616, 1637, 2020, 2480, 3131, 3232, 3274, 4040, 4960, 6262, 6548, 8080, 8185, 12524, 13096, 15655, 16160, 16370, 25048, 26192, 31310, 32740, 50096, 50747, 52384, 62620, 65480, 100192, 101494, 125240, 130960, 165337, 202988, 250480, 253735, 261920, 330674, 405976, 500960, 507470, 661348, 811952, 826685, 1014940, 1322696, 1623904, 1653370, 2029880, 2645392, 3306740, 4059760, 5125447, 5290784, 6613480, 8119520, 10250894, 13226960, 20501788, 25627235, 26453920, 41003576, 51254470, 82007152, 102508940, 164014304, 205017880, 410035760, 820071520]

約数ペア:

[(1, 820071520), (2, 410035760), (4, 205017880), (5, 164014304), (8, 102508940), (10, 82007152), (16, 51254470), (20, 41003576), (31, 26453920), (32, 25627235), (40, 20501788), (62, 13226960), (80, 10250894), (101, 8119520), (124, 6613480), (155, 5290784), (160, 5125447), (202, 4059760), (248, 3306740), (310, 2645392), (404, 2029880), (496, 1653370), (505, 1623904), (620, 1322696), (808, 1014940), (992, 826685), (1010, 811952), (1240, 661348), (1616, 507470), (1637, 500960), (2020, 405976), (2480, 330674), (3131, 261920), (3232, 253735), (3274, 250480), (4040, 202988), (4960, 165337), (6262, 130960), (6548, 125240), (8080, 101494), (8185, 100192), (12524, 65480), (13096, 62620), (15655, 52384), (16160, 50747), (16370, 50096), (25048, 32740), (26192, 31310)]