64328720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25939}}^1$

素因数の和:25983

約数の個数: 40

約数和(自身を含む): 154394880

約数和(自身を除く): 90066160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 25939, 51878, 103756, 129695, 207512, 259390, 415024, 518780, 804109, 1037560, 1608218, 2075120, 3216436, 4020545, 6432872, 8041090, 12865744, 16082180, 32164360, 64328720]

約数ペア:

[(1, 64328720), (2, 32164360), (4, 16082180), (5, 12865744), (8, 8041090), (10, 6432872), (16, 4020545), (20, 3216436), (31, 2075120), (40, 1608218), (62, 1037560), (80, 804109), (124, 518780), (155, 415024), (248, 259390), (310, 207512), (496, 129695), (620, 103756), (1240, 51878), (2480, 25939)]