199979140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{7867}}^1$

素因数の和:7948

約数の個数: 48

約数和(自身を含む): 444132864

約数和(自身を除く): 244153724

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 1271, 2542, 5084, 6355, 7867, 12710, 15734, 25420, 31468, 39335, 78670, 157340, 243877, 322547, 487754, 645094, 975508, 1219385, 1290188, 1612735, 2438770, 3225470, 4877540, 6450940, 9998957, 19997914, 39995828, 49994785, 99989570, 199979140]

約数ペア:

[(1, 199979140), (2, 99989570), (4, 49994785), (5, 39995828), (10, 19997914), (20, 9998957), (31, 6450940), (41, 4877540), (62, 3225470), (82, 2438770), (124, 1612735), (155, 1290188), (164, 1219385), (205, 975508), (310, 645094), (410, 487754), (620, 322547), (820, 243877), (1271, 157340), (2542, 78670), (5084, 39335), (6355, 31468), (7867, 25420), (12710, 15734)]