217020700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1201}}^1$

素因数の和:1367

約数の個数: 72

約数和(自身を含む): 511234640

約数和(自身を除く): 294213940

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 139, 260, 278, 325, 556, 650, 695, 1201, 1300, 1390, 1807, 2402, 2780, 3475, 3614, 4804, 6005, 6950, 7228, 9035, 12010, 13900, 15613, 18070, 24020, 30025, 31226, 36140, 45175, 60050, 62452, 78065, 90350, 120100, 156130, 166939, 180700, 312260, 333878, 390325, 667756, 780650, 834695, 1561300, 1669390, 2170207, 3338780, 4173475, 4340414, 8346950, 8680828, 10851035, 16693900, 21702070, 43404140, 54255175, 108510350, 217020700]

約数ペア:

[(1, 217020700), (2, 108510350), (4, 54255175), (5, 43404140), (10, 21702070), (13, 16693900), (20, 10851035), (25, 8680828), (26, 8346950), (50, 4340414), (52, 4173475), (65, 3338780), (100, 2170207), (130, 1669390), (139, 1561300), (260, 834695), (278, 780650), (325, 667756), (556, 390325), (650, 333878), (695, 312260), (1201, 180700), (1300, 166939), (1390, 156130), (1807, 120100), (2402, 90350), (2780, 78065), (3475, 62452), (3614, 60050), (4804, 45175), (6005, 36140), (6950, 31226), (7228, 30025), (9035, 24020), (12010, 18070), (13900, 15613)]