8215156720

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{5261}}^1$

素因数の和:5554

約数の個数: 80

約数和(自身を含む): 19378893600

約数和(自身を除く): 11163736880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 149, 262, 298, 524, 596, 655, 745, 1048, 1192, 1310, 1490, 2096, 2384, 2620, 2980, 5240, 5261, 5960, 10480, 10522, 11920, 19519, 21044, 26305, 39038, 42088, 52610, 78076, 84176, 97595, 105220, 156152, 195190, 210440, 312304, 390380, 420880, 689191, 780760, 783889, 1378382, 1561520, 1567778, 2756764, 3135556, 3445955, 3919445, 5513528, 6271112, 6891910, 7838890, 11027056, 12542224, 13783820, 15677780, 27567640, 31355560, 55135280, 62711120, 102689459, 205378918, 410757836, 513447295, 821515672, 1026894590, 1643031344, 2053789180, 4107578360, 8215156720]

約数ペア:

[(1, 8215156720), (2, 4107578360), (4, 2053789180), (5, 1643031344), (8, 1026894590), (10, 821515672), (16, 513447295), (20, 410757836), (40, 205378918), (80, 102689459), (131, 62711120), (149, 55135280), (262, 31355560), (298, 27567640), (524, 15677780), (596, 13783820), (655, 12542224), (745, 11027056), (1048, 7838890), (1192, 6891910), (1310, 6271112), (1490, 5513528), (2096, 3919445), (2384, 3445955), (2620, 3135556), (2980, 2756764), (5240, 1567778), (5261, 1561520), (5960, 1378382), (10480, 783889), (10522, 780760), (11920, 689191), (19519, 420880), (21044, 390380), (26305, 312304), (39038, 210440), (42088, 195190), (52610, 156152), (78076, 105220), (84176, 97595)]