18740820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{44621}}^1$

素因数の和:44640

約数の個数: 48

約数和(自身を含む): 59971968

約数和(自身を除く): 41231148

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 44621, 89242, 133863, 178484, 223105, 267726, 312347, 446210, 535452, 624694, 669315, 892420, 937041, 1249388, 1338630, 1561735, 1874082, 2677260, 3123470, 3748164, 4685205, 6246940, 9370410, 18740820]

約数ペア:

[(1, 18740820), (2, 9370410), (3, 6246940), (4, 4685205), (5, 3748164), (6, 3123470), (7, 2677260), (10, 1874082), (12, 1561735), (14, 1338630), (15, 1249388), (20, 937041), (21, 892420), (28, 669315), (30, 624694), (35, 535452), (42, 446210), (60, 312347), (70, 267726), (84, 223105), (105, 178484), (140, 133863), (210, 89242), (420, 44621)]