215909980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{6863}}^1$

素因数の和:6907

約数の個数: 72

約数和(自身を含む): 536792256

約数和(自身を除く): 320882276

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 605, 715, 1210, 1430, 1573, 2420, 2860, 3146, 6292, 6863, 7865, 13726, 15730, 27452, 31460, 34315, 68630, 75493, 89219, 137260, 150986, 178438, 301972, 356876, 377465, 446095, 754930, 830423, 892190, 981409, 1509860, 1660846, 1784380, 1962818, 3321692, 3925636, 4152115, 4907045, 8304230, 9814090, 10795499, 16608460, 19628180, 21590998, 43181996, 53977495, 107954990, 215909980]

約数ペア:

[(1, 215909980), (2, 107954990), (4, 53977495), (5, 43181996), (10, 21590998), (11, 19628180), (13, 16608460), (20, 10795499), (22, 9814090), (26, 8304230), (44, 4907045), (52, 4152115), (55, 3925636), (65, 3321692), (110, 1962818), (121, 1784380), (130, 1660846), (143, 1509860), (220, 981409), (242, 892190), (260, 830423), (286, 754930), (484, 446095), (572, 377465), (605, 356876), (715, 301972), (1210, 178438), (1430, 150986), (1573, 137260), (2420, 89219), (2860, 75493), (3146, 68630), (6292, 34315), (6863, 31460), (7865, 27452), (13726, 15730)]