20463891040

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{503}}^1\times {\mathrm{2857}}^1$

素因数の和:3464

約数の個数: 96

約数和(自身を含む): 49003496640

約数和(自身を除く): 28539605600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 503, 712, 890, 1006, 1424, 1780, 2012, 2515, 2848, 2857, 3560, 4024, 5030, 5714, 7120, 8048, 10060, 11428, 14240, 14285, 16096, 20120, 22856, 28570, 40240, 44767, 45712, 57140, 80480, 89534, 91424, 114280, 179068, 223835, 228560, 254273, 358136, 447670, 457120, 508546, 716272, 895340, 1017092, 1271365, 1432544, 1437071, 1790680, 2034184, 2542730, 2874142, 3581360, 4068368, 5085460, 5748284, 7162720, 7185355, 8136736, 10170920, 11496568, 14370710, 20341840, 22993136, 28741420, 40683680, 45986272, 57482840, 114965680, 127899319, 229931360, 255798638, 511597276, 639496595, 1023194552, 1278993190, 2046389104, 2557986380, 4092778208, 5115972760, 10231945520, 20463891040]

約数ペア:

[(1, 20463891040), (2, 10231945520), (4, 5115972760), (5, 4092778208), (8, 2557986380), (10, 2046389104), (16, 1278993190), (20, 1023194552), (32, 639496595), (40, 511597276), (80, 255798638), (89, 229931360), (160, 127899319), (178, 114965680), (356, 57482840), (445, 45986272), (503, 40683680), (712, 28741420), (890, 22993136), (1006, 20341840), (1424, 14370710), (1780, 11496568), (2012, 10170920), (2515, 8136736), (2848, 7185355), (2857, 7162720), (3560, 5748284), (4024, 5085460), (5030, 4068368), (5714, 3581360), (7120, 2874142), (8048, 2542730), (10060, 2034184), (11428, 1790680), (14240, 1437071), (14285, 1432544), (16096, 1271365), (20120, 1017092), (22856, 895340), (28570, 716272), (40240, 508546), (44767, 457120), (45712, 447670), (57140, 358136), (80480, 254273), (89534, 228560), (91424, 223835), (114280, 179068)]