28069840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:404

約数の個数: 80

約数和(自身を含む): 70084800

約数和(自身を除く): 42014960

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 59, 76, 80, 95, 118, 152, 190, 236, 295, 304, 313, 380, 472, 590, 626, 760, 944, 1121, 1180, 1252, 1520, 1565, 2242, 2360, 2504, 3130, 4484, 4720, 5008, 5605, 5947, 6260, 8968, 11210, 11894, 12520, 17936, 18467, 22420, 23788, 25040, 29735, 36934, 44840, 47576, 59470, 73868, 89680, 92335, 95152, 118940, 147736, 184670, 237880, 295472, 350873, 369340, 475760, 701746, 738680, 1403492, 1477360, 1754365, 2806984, 3508730, 5613968, 7017460, 14034920, 28069840]

約数ペア:

[(1, 28069840), (2, 14034920), (4, 7017460), (5, 5613968), (8, 3508730), (10, 2806984), (16, 1754365), (19, 1477360), (20, 1403492), (38, 738680), (40, 701746), (59, 475760), (76, 369340), (80, 350873), (95, 295472), (118, 237880), (152, 184670), (190, 147736), (236, 118940), (295, 95152), (304, 92335), (313, 89680), (380, 73868), (472, 59470), (590, 47576), (626, 44840), (760, 36934), (944, 29735), (1121, 25040), (1180, 23788), (1252, 22420), (1520, 18467), (1565, 17936), (2242, 12520), (2360, 11894), (2504, 11210), (3130, 8968), (4484, 6260), (4720, 5947), (5008, 5605)]