21880212

素因数分解:

$2^2\times 3^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 52746624

約数和(自身を除く): 30866412

約数列:

[1, 2, 3, 4, 6, 12, 61, 71, 122, 142, 183, 213, 244, 284, 366, 421, 426, 732, 842, 852, 1263, 1684, 2526, 4331, 5052, 8662, 12993, 17324, 25681, 25986, 29891, 51362, 51972, 59782, 77043, 89673, 102724, 119564, 154086, 179346, 308172, 358692, 1823351, 3646702, 5470053, 7293404, 10940106, 21880212]

約数ペア:

[(1, 21880212), (2, 10940106), (3, 7293404), (4, 5470053), (6, 3646702), (12, 1823351), (61, 358692), (71, 308172), (122, 179346), (142, 154086), (183, 119564), (213, 102724), (244, 89673), (284, 77043), (366, 59782), (421, 51972), (426, 51362), (732, 29891), (842, 25986), (852, 25681), (1263, 17324), (1684, 12993), (2526, 8662), (4331, 5052)]