21409884

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{277}}^1$

素因数の和:419

約数の個数: 72

約数和(自身を含む): 57679440

約数和(自身を除く): 36269556

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 113, 114, 171, 226, 228, 277, 339, 342, 452, 554, 678, 684, 831, 1017, 1108, 1356, 1662, 2034, 2147, 2493, 3324, 4068, 4294, 4986, 5263, 6441, 8588, 9972, 10526, 12882, 15789, 19323, 21052, 25764, 31301, 31578, 38646, 47367, 62602, 63156, 77292, 93903, 94734, 125204, 187806, 189468, 281709, 375612, 563418, 594719, 1126836, 1189438, 1784157, 2378876, 3568314, 5352471, 7136628, 10704942, 21409884]

約数ペア:

[(1, 21409884), (2, 10704942), (3, 7136628), (4, 5352471), (6, 3568314), (9, 2378876), (12, 1784157), (18, 1189438), (19, 1126836), (36, 594719), (38, 563418), (57, 375612), (76, 281709), (113, 189468), (114, 187806), (171, 125204), (226, 94734), (228, 93903), (277, 77292), (339, 63156), (342, 62602), (452, 47367), (554, 38646), (678, 31578), (684, 31301), (831, 25764), (1017, 21052), (1108, 19323), (1356, 15789), (1662, 12882), (2034, 10526), (2147, 9972), (2493, 8588), (3324, 6441), (4068, 5263), (4294, 4986)]