99839920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:614

約数の個数: 80

約数和(自身を含む): 242172000

約数和(自身を除く): 142332080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 61, 80, 82, 122, 164, 205, 244, 305, 328, 410, 488, 499, 610, 656, 820, 976, 998, 1220, 1640, 1996, 2440, 2495, 2501, 3280, 3992, 4880, 4990, 5002, 7984, 9980, 10004, 12505, 19960, 20008, 20459, 25010, 30439, 39920, 40016, 40918, 50020, 60878, 81836, 100040, 102295, 121756, 152195, 163672, 200080, 204590, 243512, 304390, 327344, 409180, 487024, 608780, 818360, 1217560, 1247999, 1636720, 2435120, 2495998, 4991996, 6239995, 9983992, 12479990, 19967984, 24959980, 49919960, 99839920]

約数ペア:

[(1, 99839920), (2, 49919960), (4, 24959980), (5, 19967984), (8, 12479990), (10, 9983992), (16, 6239995), (20, 4991996), (40, 2495998), (41, 2435120), (61, 1636720), (80, 1247999), (82, 1217560), (122, 818360), (164, 608780), (205, 487024), (244, 409180), (305, 327344), (328, 304390), (410, 243512), (488, 204590), (499, 200080), (610, 163672), (656, 152195), (820, 121756), (976, 102295), (998, 100040), (1220, 81836), (1640, 60878), (1996, 50020), (2440, 40918), (2495, 40016), (2501, 39920), (3280, 30439), (3992, 25010), (4880, 20459), (4990, 20008), (5002, 19960), (7984, 12505), (9980, 10004)]