2121580

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:154

約数の個数: 48

約数和(自身を含む): 4749696

約数和(自身を除く): 2628116

約数列:

[1, 2, 4, 5, 10, 20, 37, 47, 61, 74, 94, 122, 148, 185, 188, 235, 244, 305, 370, 470, 610, 740, 940, 1220, 1739, 2257, 2867, 3478, 4514, 5734, 6956, 8695, 9028, 11285, 11468, 14335, 17390, 22570, 28670, 34780, 45140, 57340, 106079, 212158, 424316, 530395, 1060790, 2121580]

約数ペア:

[(1, 2121580), (2, 1060790), (4, 530395), (5, 424316), (10, 212158), (20, 106079), (37, 57340), (47, 45140), (61, 34780), (74, 28670), (94, 22570), (122, 17390), (148, 14335), (185, 11468), (188, 11285), (235, 9028), (244, 8695), (305, 6956), (370, 5734), (470, 4514), (610, 3478), (740, 2867), (940, 2257), (1220, 1739)]