1618820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{373}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 4021248

約数和(自身を除く): 2402428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 373, 434, 620, 746, 868, 1085, 1492, 1865, 2170, 2611, 3730, 4340, 5222, 7460, 10444, 11563, 13055, 23126, 26110, 46252, 52220, 57815, 80941, 115630, 161882, 231260, 323764, 404705, 809410, 1618820]

約数ペア:

[(1, 1618820), (2, 809410), (4, 404705), (5, 323764), (7, 231260), (10, 161882), (14, 115630), (20, 80941), (28, 57815), (31, 52220), (35, 46252), (62, 26110), (70, 23126), (124, 13055), (140, 11563), (155, 10444), (217, 7460), (310, 5222), (373, 4340), (434, 3730), (620, 2611), (746, 2170), (868, 1865), (1085, 1492)]