638782900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{29437}}^1$

素因数の和:29489

約数の個数: 72

約数和(自身を含む): 1635339776

約数和(自身を除く): 996556876

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 140, 155, 175, 217, 310, 350, 434, 620, 700, 775, 868, 1085, 1550, 2170, 3100, 4340, 5425, 10850, 21700, 29437, 58874, 117748, 147185, 206059, 294370, 412118, 588740, 735925, 824236, 912547, 1030295, 1471850, 1825094, 2060590, 2943700, 3650188, 4121180, 4562735, 5151475, 6387829, 9125470, 10302950, 12775658, 18250940, 20605900, 22813675, 25551316, 31939145, 45627350, 63878290, 91254700, 127756580, 159695725, 319391450, 638782900]

約数ペア:

[(1, 638782900), (2, 319391450), (4, 159695725), (5, 127756580), (7, 91254700), (10, 63878290), (14, 45627350), (20, 31939145), (25, 25551316), (28, 22813675), (31, 20605900), (35, 18250940), (50, 12775658), (62, 10302950), (70, 9125470), (100, 6387829), (124, 5151475), (140, 4562735), (155, 4121180), (175, 3650188), (217, 2943700), (310, 2060590), (350, 1825094), (434, 1471850), (620, 1030295), (700, 912547), (775, 824236), (868, 735925), (1085, 588740), (1550, 412118), (2170, 294370), (3100, 206059), (4340, 147185), (5425, 117748), (10850, 58874), (21700, 29437)]