38934980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3917}}^1$

素因数の和:4004

約数の個数: 48

約数和(自身を含む): 94784256

約数和(自身を除く): 55849276

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, 3917, 4970, 7834, 9940, 15668, 19585, 27419, 39170, 54838, 78340, 109676, 137095, 274190, 278107, 548380, 556214, 1112428, 1390535, 1946749, 2781070, 3893498, 5562140, 7786996, 9733745, 19467490, 38934980]

約数ペア:

[(1, 38934980), (2, 19467490), (4, 9733745), (5, 7786996), (7, 5562140), (10, 3893498), (14, 2781070), (20, 1946749), (28, 1390535), (35, 1112428), (70, 556214), (71, 548380), (140, 278107), (142, 274190), (284, 137095), (355, 109676), (497, 78340), (710, 54838), (994, 39170), (1420, 27419), (1988, 19585), (2485, 15668), (3917, 9940), (4970, 7834)]