28994980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2917}}^1$

素因数の和:3004

約数の個数: 48

約数和(自身を含む): 70592256

約数和(自身を除く): 41597276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 2917, 4970, 5834, 9940, 11668, 14585, 20419, 29170, 40838, 58340, 81676, 102095, 204190, 207107, 408380, 414214, 828428, 1035535, 1449749, 2071070, 2899498, 4142140, 5798996, 7248745, 14497490, 28994980]

約数ペア:

[(1, 28994980), (2, 14497490), (4, 7248745), (5, 5798996), (7, 4142140), (10, 2899498), (14, 2071070), (20, 1449749), (28, 1035535), (35, 828428), (70, 414214), (71, 408380), (140, 207107), (142, 204190), (284, 102095), (355, 81676), (497, 58340), (710, 40838), (994, 29170), (1420, 20419), (1988, 14585), (2485, 11668), (2917, 9940), (4970, 5834)]