917840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1$

素因数の和:180

約数の個数: 80

約数和(自身を含む): 2678400

約数和(自身を除く): 1760560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 149, 154, 176, 220, 280, 298, 308, 385, 440, 560, 596, 616, 745, 770, 880, 1043, 1192, 1232, 1490, 1540, 1639, 2086, 2384, 2980, 3080, 3278, 4172, 5215, 5960, 6160, 6556, 8195, 8344, 10430, 11473, 11920, 13112, 16390, 16688, 20860, 22946, 26224, 32780, 41720, 45892, 57365, 65560, 83440, 91784, 114730, 131120, 183568, 229460, 458920, 917840]

約数ペア:

[(1, 917840), (2, 458920), (4, 229460), (5, 183568), (7, 131120), (8, 114730), (10, 91784), (11, 83440), (14, 65560), (16, 57365), (20, 45892), (22, 41720), (28, 32780), (35, 26224), (40, 22946), (44, 20860), (55, 16688), (56, 16390), (70, 13112), (77, 11920), (80, 11473), (88, 10430), (110, 8344), (112, 8195), (140, 6556), (149, 6160), (154, 5960), (176, 5215), (220, 4172), (280, 3278), (298, 3080), (308, 2980), (385, 2384), (440, 2086), (560, 1639), (596, 1540), (616, 1490), (745, 1232), (770, 1192), (880, 1043)]