164161760

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{20939}}^1$

素因数の和:20968

約数の個数: 72

約数和(自身を含む): 451173240

約数和(自身を除く): 287011480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 20939, 41878, 83756, 104695, 146573, 167512, 209390, 293146, 335024, 418780, 586292, 670048, 732865, 837560, 1026011, 1172584, 1465730, 1675120, 2052022, 2345168, 2931460, 3350240, 4104044, 4690336, 5130055, 5862920, 8208088, 10260110, 11725840, 16416176, 20520220, 23451680, 32832352, 41040440, 82080880, 164161760]

約数ペア:

[(1, 164161760), (2, 82080880), (4, 41040440), (5, 32832352), (7, 23451680), (8, 20520220), (10, 16416176), (14, 11725840), (16, 10260110), (20, 8208088), (28, 5862920), (32, 5130055), (35, 4690336), (40, 4104044), (49, 3350240), (56, 2931460), (70, 2345168), (80, 2052022), (98, 1675120), (112, 1465730), (140, 1172584), (160, 1026011), (196, 837560), (224, 732865), (245, 670048), (280, 586292), (392, 418780), (490, 335024), (560, 293146), (784, 209390), (980, 167512), (1120, 146573), (1568, 104695), (1960, 83756), (3920, 41878), (7840, 20939)]