19549840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7883}}^1$

素因数の和:7927

約数の個数: 40

約数和(自身を含む): 46925568

約数和(自身を除く): 27375728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7883, 15766, 31532, 39415, 63064, 78830, 126128, 157660, 244373, 315320, 488746, 630640, 977492, 1221865, 1954984, 2443730, 3909968, 4887460, 9774920, 19549840]

約数ペア:

[(1, 19549840), (2, 9774920), (4, 4887460), (5, 3909968), (8, 2443730), (10, 1954984), (16, 1221865), (20, 977492), (31, 630640), (40, 488746), (62, 315320), (80, 244373), (124, 157660), (155, 126128), (248, 78830), (310, 63064), (496, 39415), (620, 31532), (1240, 15766), (2480, 7883)]