81345160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{503}}^1$

素因数の和:838

約数の個数: 64

約数和(自身を含む): 198132480

約数和(自身を除く): 116787320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 311, 503, 520, 622, 1006, 1244, 1555, 2012, 2488, 2515, 3110, 4024, 4043, 5030, 6220, 6539, 8086, 10060, 12440, 13078, 16172, 20120, 20215, 26156, 32344, 32695, 40430, 52312, 65390, 80860, 130780, 156433, 161720, 261560, 312866, 625732, 782165, 1251464, 1564330, 2033629, 3128660, 4067258, 6257320, 8134516, 10168145, 16269032, 20336290, 40672580, 81345160]

約数ペア:

[(1, 81345160), (2, 40672580), (4, 20336290), (5, 16269032), (8, 10168145), (10, 8134516), (13, 6257320), (20, 4067258), (26, 3128660), (40, 2033629), (52, 1564330), (65, 1251464), (104, 782165), (130, 625732), (260, 312866), (311, 261560), (503, 161720), (520, 156433), (622, 130780), (1006, 80860), (1244, 65390), (1555, 52312), (2012, 40430), (2488, 32695), (2515, 32344), (3110, 26156), (4024, 20215), (4043, 20120), (5030, 16172), (6220, 13078), (6539, 12440), (8086, 10060)]