21068790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:497

約数の個数: 64

約数和(自身を含む): 53300160

約数和(自身を除く): 32231370

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 61, 87, 122, 145, 174, 183, 290, 305, 366, 397, 435, 610, 794, 870, 915, 1191, 1769, 1830, 1985, 2382, 3538, 3970, 5307, 5955, 8845, 10614, 11513, 11910, 17690, 23026, 24217, 26535, 34539, 48434, 53070, 57565, 69078, 72651, 115130, 121085, 145302, 172695, 242170, 345390, 363255, 702293, 726510, 1404586, 2106879, 3511465, 4213758, 7022930, 10534395, 21068790]

約数ペア:

[(1, 21068790), (2, 10534395), (3, 7022930), (5, 4213758), (6, 3511465), (10, 2106879), (15, 1404586), (29, 726510), (30, 702293), (58, 363255), (61, 345390), (87, 242170), (122, 172695), (145, 145302), (174, 121085), (183, 115130), (290, 72651), (305, 69078), (366, 57565), (397, 53070), (435, 48434), (610, 34539), (794, 26535), (870, 24217), (915, 23026), (1191, 17690), (1769, 11910), (1830, 11513), (1985, 10614), (2382, 8845), (3538, 5955), (3970, 5307)]