17661940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{467}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 21335564

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 467, 610, 620, 934, 1220, 1868, 1891, 2335, 3782, 4670, 7564, 9340, 9455, 14477, 18910, 28487, 28954, 37820, 56974, 57908, 72385, 113948, 142435, 144770, 284870, 289540, 569740, 883097, 1766194, 3532388, 4415485, 8830970, 17661940]

約数ペア:

[(1, 17661940), (2, 8830970), (4, 4415485), (5, 3532388), (10, 1766194), (20, 883097), (31, 569740), (61, 289540), (62, 284870), (122, 144770), (124, 142435), (155, 113948), (244, 72385), (305, 57908), (310, 56974), (467, 37820), (610, 28954), (620, 28487), (934, 18910), (1220, 14477), (1868, 9455), (1891, 9340), (2335, 7564), (3782, 4670)]