279801040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{439}}^1$

素因数の和:740

約数の個数: 80

約数和(自身を含む): 675671040

約数和(自身を除く): 395870000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 257, 310, 439, 496, 514, 620, 878, 1028, 1240, 1285, 1756, 2056, 2195, 2480, 2570, 3512, 4112, 4390, 5140, 7024, 7967, 8780, 10280, 13609, 15934, 17560, 20560, 27218, 31868, 35120, 39835, 54436, 63736, 68045, 79670, 108872, 112823, 127472, 136090, 159340, 217744, 225646, 272180, 318680, 451292, 544360, 564115, 637360, 902584, 1088720, 1128230, 1805168, 2256460, 3497513, 4512920, 6995026, 9025840, 13990052, 17487565, 27980104, 34975130, 55960208, 69950260, 139900520, 279801040]

約数ペア:

[(1, 279801040), (2, 139900520), (4, 69950260), (5, 55960208), (8, 34975130), (10, 27980104), (16, 17487565), (20, 13990052), (31, 9025840), (40, 6995026), (62, 4512920), (80, 3497513), (124, 2256460), (155, 1805168), (248, 1128230), (257, 1088720), (310, 902584), (439, 637360), (496, 564115), (514, 544360), (620, 451292), (878, 318680), (1028, 272180), (1240, 225646), (1285, 217744), (1756, 159340), (2056, 136090), (2195, 127472), (2480, 112823), (2570, 108872), (3512, 79670), (4112, 68045), (4390, 63736), (5140, 54436), (7024, 39835), (7967, 35120), (8780, 31868), (10280, 27218), (13609, 20560), (15934, 17560)]