261639420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{88993}}^1$

素因数の和:89019

約数の個数: 72

約数和(自身を含む): 852206544

約数和(自身を除く): 590567124

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 88993, 177986, 266979, 355972, 444965, 533958, 622951, 889930, 1067916, 1245902, 1334895, 1779860, 1868853, 2491804, 2669790, 3114755, 3737706, 4360657, 5339580, 6229510, 7475412, 8721314, 9344265, 12459020, 13081971, 17442628, 18688530, 21803285, 26163942, 37377060, 43606570, 52327884, 65409855, 87213140, 130819710, 261639420]

約数ペア:

[(1, 261639420), (2, 130819710), (3, 87213140), (4, 65409855), (5, 52327884), (6, 43606570), (7, 37377060), (10, 26163942), (12, 21803285), (14, 18688530), (15, 17442628), (20, 13081971), (21, 12459020), (28, 9344265), (30, 8721314), (35, 7475412), (42, 6229510), (49, 5339580), (60, 4360657), (70, 3737706), (84, 3114755), (98, 2669790), (105, 2491804), (140, 1868853), (147, 1779860), (196, 1334895), (210, 1245902), (245, 1067916), (294, 889930), (420, 622951), (490, 533958), (588, 444965), (735, 355972), (980, 266979), (1470, 177986), (2940, 88993)]