21402056

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10831}}^1$

素因数の和:10869

約数の個数: 32

約数和(自身を含む): 45494400

約数和(自身を除く): 24092344

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10831, 21662, 43324, 86648, 140803, 205789, 281606, 411578, 563212, 823156, 1126424, 1646312, 2675257, 5350514, 10701028, 21402056]

約数ペア:

[(1, 21402056), (2, 10701028), (4, 5350514), (8, 2675257), (13, 1646312), (19, 1126424), (26, 823156), (38, 563212), (52, 411578), (76, 281606), (104, 205789), (152, 140803), (247, 86648), (494, 43324), (988, 21662), (1976, 10831)]