15978340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1871}}^1$

素因数の和:1948

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 23019164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 1871, 2135, 3742, 4270, 7484, 8540, 9355, 13097, 18710, 26194, 37420, 52388, 65485, 114131, 130970, 228262, 261940, 456524, 570655, 798917, 1141310, 1597834, 2282620, 3195668, 3994585, 7989170, 15978340]

約数ペア:

[(1, 15978340), (2, 7989170), (4, 3994585), (5, 3195668), (7, 2282620), (10, 1597834), (14, 1141310), (20, 798917), (28, 570655), (35, 456524), (61, 261940), (70, 228262), (122, 130970), (140, 114131), (244, 65485), (305, 52388), (427, 37420), (610, 26194), (854, 18710), (1220, 13097), (1708, 9355), (1871, 8540), (2135, 7484), (3742, 4270)]