81797840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32983}}^1$

素因数の和:33027

約数の個数: 40

約数和(自身を含む): 196320768

約数和(自身を除く): 114522928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 32983, 65966, 131932, 164915, 263864, 329830, 527728, 659660, 1022473, 1319320, 2044946, 2638640, 4089892, 5112365, 8179784, 10224730, 16359568, 20449460, 40898920, 81797840]

約数ペア:

[(1, 81797840), (2, 40898920), (4, 20449460), (5, 16359568), (8, 10224730), (10, 8179784), (16, 5112365), (20, 4089892), (31, 2638640), (40, 2044946), (62, 1319320), (80, 1022473), (124, 659660), (155, 527728), (248, 329830), (310, 263864), (496, 164915), (620, 131932), (1240, 65966), (2480, 32983)]