13421840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:240

約数の個数: 80

約数和(自身を含む): 33747840

約数和(自身を除く): 20326000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 71, 80, 85, 136, 139, 142, 170, 272, 278, 284, 340, 355, 556, 568, 680, 695, 710, 1112, 1136, 1207, 1360, 1390, 1420, 2224, 2363, 2414, 2780, 2840, 4726, 4828, 5560, 5680, 6035, 9452, 9656, 9869, 11120, 11815, 12070, 18904, 19312, 19738, 23630, 24140, 37808, 39476, 47260, 48280, 49345, 78952, 94520, 96560, 98690, 157904, 167773, 189040, 197380, 335546, 394760, 671092, 789520, 838865, 1342184, 1677730, 2684368, 3355460, 6710920, 13421840]

約数ペア:

[(1, 13421840), (2, 6710920), (4, 3355460), (5, 2684368), (8, 1677730), (10, 1342184), (16, 838865), (17, 789520), (20, 671092), (34, 394760), (40, 335546), (68, 197380), (71, 189040), (80, 167773), (85, 157904), (136, 98690), (139, 96560), (142, 94520), (170, 78952), (272, 49345), (278, 48280), (284, 47260), (340, 39476), (355, 37808), (556, 24140), (568, 23630), (680, 19738), (695, 19312), (710, 18904), (1112, 12070), (1136, 11815), (1207, 11120), (1360, 9869), (1390, 9656), (1420, 9452), (2224, 6035), (2363, 5680), (2414, 5560), (2780, 4828), (2840, 4726)]