21085233

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 31799040

約数和(自身を除く): 10713807

約数列:

[1, 3, 13, 29, 39, 87, 103, 181, 309, 377, 543, 1131, 1339, 2353, 2987, 4017, 5249, 7059, 8961, 15747, 18643, 38831, 55929, 68237, 116493, 204711, 242359, 540647, 727077, 1621941, 7028411, 21085233]

約数ペア:

[(1, 21085233), (3, 7028411), (13, 1621941), (29, 727077), (39, 540647), (87, 242359), (103, 204711), (181, 116493), (309, 68237), (377, 55929), (543, 38831), (1131, 18643), (1339, 15747), (2353, 8961), (2987, 7059), (4017, 5249)]