16404520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1621}}^1$

素因数の和:1666

約数の個数: 64

約数和(自身を含む): 42042240

約数和(自身を除く): 25637720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1265, 1621, 2024, 2530, 3242, 5060, 6484, 8105, 10120, 12968, 16210, 17831, 32420, 35662, 37283, 64840, 71324, 74566, 89155, 142648, 149132, 178310, 186415, 298264, 356620, 372830, 410113, 713240, 745660, 820226, 1491320, 1640452, 2050565, 3280904, 4101130, 8202260, 16404520]

約数ペア:

[(1, 16404520), (2, 8202260), (4, 4101130), (5, 3280904), (8, 2050565), (10, 1640452), (11, 1491320), (20, 820226), (22, 745660), (23, 713240), (40, 410113), (44, 372830), (46, 356620), (55, 298264), (88, 186415), (92, 178310), (110, 149132), (115, 142648), (184, 89155), (220, 74566), (230, 71324), (253, 64840), (440, 37283), (460, 35662), (506, 32420), (920, 17831), (1012, 16210), (1265, 12968), (1621, 10120), (2024, 8105), (2530, 6484), (3242, 5060)]