81791880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1619}}^1$

素因数の和:2054

約数の個数: 64

約数和(自身を含む): 246110400

約数和(自身を除く): 164318520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 421, 842, 1263, 1619, 1684, 2105, 2526, 3238, 3368, 4210, 4857, 5052, 6315, 6476, 8095, 8420, 9714, 10104, 12630, 12952, 16190, 16840, 19428, 24285, 25260, 32380, 38856, 48570, 50520, 64760, 97140, 194280, 681599, 1363198, 2044797, 2726396, 3407995, 4089594, 5452792, 6815990, 8179188, 10223985, 13631980, 16358376, 20447970, 27263960, 40895940, 81791880]

約数ペア:

[(1, 81791880), (2, 40895940), (3, 27263960), (4, 20447970), (5, 16358376), (6, 13631980), (8, 10223985), (10, 8179188), (12, 6815990), (15, 5452792), (20, 4089594), (24, 3407995), (30, 2726396), (40, 2044797), (60, 1363198), (120, 681599), (421, 194280), (842, 97140), (1263, 64760), (1619, 50520), (1684, 48570), (2105, 38856), (2526, 32380), (3238, 25260), (3368, 24285), (4210, 19428), (4857, 16840), (5052, 16190), (6315, 12952), (6476, 12630), (8095, 10104), (8420, 9714)]