20561910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:353

約数の個数: 64

約数和(自身を含む): 51468480

約数和(自身を除く): 30906570

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 73, 82, 123, 146, 205, 219, 229, 246, 365, 410, 438, 458, 615, 687, 730, 1095, 1145, 1230, 1374, 2190, 2290, 2993, 3435, 5986, 6870, 8979, 9389, 14965, 16717, 17958, 18778, 28167, 29930, 33434, 44895, 46945, 50151, 56334, 83585, 89790, 93890, 100302, 140835, 167170, 250755, 281670, 501510, 685397, 1370794, 2056191, 3426985, 4112382, 6853970, 10280955, 20561910]

約数ペア:

[(1, 20561910), (2, 10280955), (3, 6853970), (5, 4112382), (6, 3426985), (10, 2056191), (15, 1370794), (30, 685397), (41, 501510), (73, 281670), (82, 250755), (123, 167170), (146, 140835), (205, 100302), (219, 93890), (229, 89790), (246, 83585), (365, 56334), (410, 50151), (438, 46945), (458, 44895), (615, 33434), (687, 29930), (730, 28167), (1095, 18778), (1145, 17958), (1230, 16717), (1374, 14965), (2190, 9389), (2290, 8979), (2993, 6870), (3435, 5986)]