19788780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29983}}^1$

素因数の和:30006

約数の個数: 48

約数和(自身を含む): 60447744

約数和(自身を除く): 40658964

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 29983, 59966, 89949, 119932, 149915, 179898, 299830, 329813, 359796, 449745, 599660, 659626, 899490, 989439, 1319252, 1649065, 1798980, 1978878, 3298130, 3957756, 4947195, 6596260, 9894390, 19788780]

約数ペア:

[(1, 19788780), (2, 9894390), (3, 6596260), (4, 4947195), (5, 3957756), (6, 3298130), (10, 1978878), (11, 1798980), (12, 1649065), (15, 1319252), (20, 989439), (22, 899490), (30, 659626), (33, 599660), (44, 449745), (55, 359796), (60, 329813), (66, 299830), (110, 179898), (132, 149915), (165, 119932), (220, 89949), (330, 59966), (660, 29983)]