20342490

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{617}}^1$

素因数の和:791

約数の個数: 64

約数和(自身を含む): 56242944

約数和(自身を除く): 35900454

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 157, 210, 314, 471, 617, 785, 942, 1099, 1234, 1570, 1851, 2198, 2355, 3085, 3297, 3702, 4319, 4710, 5495, 6170, 6594, 8638, 9255, 10990, 12957, 16485, 18510, 21595, 25914, 32970, 43190, 64785, 96869, 129570, 193738, 290607, 484345, 581214, 678083, 968690, 1356166, 1453035, 2034249, 2906070, 3390415, 4068498, 6780830, 10171245, 20342490]

約数ペア:

[(1, 20342490), (2, 10171245), (3, 6780830), (5, 4068498), (6, 3390415), (7, 2906070), (10, 2034249), (14, 1453035), (15, 1356166), (21, 968690), (30, 678083), (35, 581214), (42, 484345), (70, 290607), (105, 193738), (157, 129570), (210, 96869), (314, 64785), (471, 43190), (617, 32970), (785, 25914), (942, 21595), (1099, 18510), (1234, 16485), (1570, 12957), (1851, 10990), (2198, 9255), (2355, 8638), (3085, 6594), (3297, 6170), (3702, 5495), (4319, 4710)]