205564720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{82889}}^1$

素因数の和:82933

約数の個数: 40

約数和(自身を含む): 493361280

約数和(自身を除く): 287796560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 82889, 165778, 331556, 414445, 663112, 828890, 1326224, 1657780, 2569559, 3315560, 5139118, 6631120, 10278236, 12847795, 20556472, 25695590, 41112944, 51391180, 102782360, 205564720]

約数ペア:

[(1, 205564720), (2, 102782360), (4, 51391180), (5, 41112944), (8, 25695590), (10, 20556472), (16, 12847795), (20, 10278236), (31, 6631120), (40, 5139118), (62, 3315560), (80, 2569559), (124, 1657780), (155, 1326224), (248, 828890), (310, 663112), (496, 414445), (620, 331556), (1240, 165778), (2480, 82889)]