19948590

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{419}}^1$

素因数の和:478

約数の個数: 72

約数和(自身を含む): 54348840

約数和(自身を除く): 34400250

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 69, 90, 115, 138, 207, 230, 345, 414, 419, 529, 690, 838, 1035, 1058, 1257, 1587, 2070, 2095, 2514, 2645, 3174, 3771, 4190, 4761, 5290, 6285, 7542, 7935, 9522, 9637, 12570, 15870, 18855, 19274, 23805, 28911, 37710, 47610, 48185, 57822, 86733, 96370, 144555, 173466, 221651, 289110, 433665, 443302, 664953, 867330, 1108255, 1329906, 1994859, 2216510, 3324765, 3989718, 6649530, 9974295, 19948590]

約数ペア:

[(1, 19948590), (2, 9974295), (3, 6649530), (5, 3989718), (6, 3324765), (9, 2216510), (10, 1994859), (15, 1329906), (18, 1108255), (23, 867330), (30, 664953), (45, 443302), (46, 433665), (69, 289110), (90, 221651), (115, 173466), (138, 144555), (207, 96370), (230, 86733), (345, 57822), (414, 48185), (419, 47610), (529, 37710), (690, 28911), (838, 23805), (1035, 19274), (1058, 18855), (1257, 15870), (1587, 12570), (2070, 9637), (2095, 9522), (2514, 7935), (2645, 7542), (3174, 6285), (3771, 5290), (4190, 4761)]