210122780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{1439}}^1$

素因数の和:1611

約数の個数: 72

約数和(自身を含む): 517104000

約数和(自身を除く): 306981220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 149, 196, 245, 298, 490, 596, 745, 980, 1043, 1439, 1490, 2086, 2878, 2980, 4172, 5215, 5756, 7195, 7301, 10073, 10430, 14390, 14602, 20146, 20860, 28780, 29204, 36505, 40292, 50365, 70511, 73010, 100730, 141022, 146020, 201460, 214411, 282044, 352555, 428822, 705110, 857644, 1072055, 1410220, 1500877, 2144110, 3001754, 4288220, 6003508, 7504385, 10506139, 15008770, 21012278, 30017540, 42024556, 52530695, 105061390, 210122780]

約数ペア:

[(1, 210122780), (2, 105061390), (4, 52530695), (5, 42024556), (7, 30017540), (10, 21012278), (14, 15008770), (20, 10506139), (28, 7504385), (35, 6003508), (49, 4288220), (70, 3001754), (98, 2144110), (140, 1500877), (149, 1410220), (196, 1072055), (245, 857644), (298, 705110), (490, 428822), (596, 352555), (745, 282044), (980, 214411), (1043, 201460), (1439, 146020), (1490, 141022), (2086, 100730), (2878, 73010), (2980, 70511), (4172, 50365), (5215, 40292), (5756, 36505), (7195, 29204), (7301, 28780), (10073, 20860), (10430, 20146), (14390, 14602)]