19651920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{81883}}^1$

素因数の和:81899

約数の個数: 40

約数和(自身を含む): 60921696

約数和(自身を除く): 41269776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 81883, 163766, 245649, 327532, 409415, 491298, 655064, 818830, 982596, 1228245, 1310128, 1637660, 1965192, 2456490, 3275320, 3930384, 4912980, 6550640, 9825960, 19651920]

約数ペア:

[(1, 19651920), (2, 9825960), (3, 6550640), (4, 4912980), (5, 3930384), (6, 3275320), (8, 2456490), (10, 1965192), (12, 1637660), (15, 1310128), (16, 1228245), (20, 982596), (24, 818830), (30, 655064), (40, 491298), (48, 409415), (60, 327532), (80, 245649), (120, 163766), (240, 81883)]