640150

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:109

約数の個数: 48

約数和(自身を含む): 1428480

約数和(自身を除く): 788330

約数列:

[1, 2, 5, 7, 10, 14, 25, 31, 35, 50, 59, 62, 70, 118, 155, 175, 217, 295, 310, 350, 413, 434, 590, 775, 826, 1085, 1475, 1550, 1829, 2065, 2170, 2950, 3658, 4130, 5425, 9145, 10325, 10850, 12803, 18290, 20650, 25606, 45725, 64015, 91450, 128030, 320075, 640150]

約数ペア:

[(1, 640150), (2, 320075), (5, 128030), (7, 91450), (10, 64015), (14, 45725), (25, 25606), (31, 20650), (35, 18290), (50, 12803), (59, 10850), (62, 10325), (70, 9145), (118, 5425), (155, 4130), (175, 3658), (217, 2950), (295, 2170), (310, 2065), (350, 1829), (413, 1550), (434, 1475), (590, 1085), (775, 826)]