71245620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{997}}^1$

素因数の和:1409

約数の個数: 72

約数和(自身を含む): 216873384

約数和(自身を除く): 145627764

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 397, 794, 997, 1191, 1588, 1985, 1994, 2382, 2991, 3573, 3970, 3988, 4764, 4985, 5955, 5982, 7146, 7940, 8973, 9970, 11910, 11964, 14292, 14955, 17865, 17946, 19940, 23820, 29910, 35730, 35892, 44865, 59820, 71460, 89730, 179460, 395809, 791618, 1187427, 1583236, 1979045, 2374854, 3562281, 3958090, 4749708, 5937135, 7124562, 7916180, 11874270, 14249124, 17811405, 23748540, 35622810, 71245620]

約数ペア:

[(1, 71245620), (2, 35622810), (3, 23748540), (4, 17811405), (5, 14249124), (6, 11874270), (9, 7916180), (10, 7124562), (12, 5937135), (15, 4749708), (18, 3958090), (20, 3562281), (30, 2374854), (36, 1979045), (45, 1583236), (60, 1187427), (90, 791618), (180, 395809), (397, 179460), (794, 89730), (997, 71460), (1191, 59820), (1588, 44865), (1985, 35892), (1994, 35730), (2382, 29910), (2991, 23820), (3573, 19940), (3970, 17946), (3988, 17865), (4764, 14955), (4985, 14292), (5955, 11964), (5982, 11910), (7146, 9970), (7940, 8973)]