216904520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{24989}}^1$

素因数の和:25038

約数の個数: 64

約数和(自身を含む): 575769600

約数和(自身を除く): 358865080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 24989, 49978, 99956, 124945, 174923, 199912, 249890, 349846, 499780, 699692, 774659, 874615, 999560, 1399384, 1549318, 1749230, 3098636, 3498460, 3873295, 5422613, 6197272, 6996920, 7746590, 10845226, 15493180, 21690452, 27113065, 30986360, 43380904, 54226130, 108452260, 216904520]

約数ペア:

[(1, 216904520), (2, 108452260), (4, 54226130), (5, 43380904), (7, 30986360), (8, 27113065), (10, 21690452), (14, 15493180), (20, 10845226), (28, 7746590), (31, 6996920), (35, 6197272), (40, 5422613), (56, 3873295), (62, 3498460), (70, 3098636), (124, 1749230), (140, 1549318), (155, 1399384), (217, 999560), (248, 874615), (280, 774659), (310, 699692), (434, 499780), (620, 349846), (868, 249890), (1085, 199912), (1240, 174923), (1736, 124945), (2170, 99956), (4340, 49978), (8680, 24989)]