2038980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1999}}^1$

素因数の和:2028

約数の個数: 48

約数和(自身を含む): 6048000

約数和(自身を除く): 4009020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 1999, 3998, 5997, 7996, 9995, 11994, 19990, 23988, 29985, 33983, 39980, 59970, 67966, 101949, 119940, 135932, 169915, 203898, 339830, 407796, 509745, 679660, 1019490, 2038980]

約数ペア:

[(1, 2038980), (2, 1019490), (3, 679660), (4, 509745), (5, 407796), (6, 339830), (10, 203898), (12, 169915), (15, 135932), (17, 119940), (20, 101949), (30, 67966), (34, 59970), (51, 39980), (60, 33983), (68, 29985), (85, 23988), (102, 19990), (170, 11994), (204, 9995), (255, 7996), (340, 5997), (510, 3998), (1020, 1999)]