18672850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1721}}^1$

素因数の和:1771

約数の個数: 48

約数和(自身を含む): 40997376

約数和(自身を除く): 22324526

約数列:

[1, 2, 5, 7, 10, 14, 25, 31, 35, 50, 62, 70, 155, 175, 217, 310, 350, 434, 775, 1085, 1550, 1721, 2170, 3442, 5425, 8605, 10850, 12047, 17210, 24094, 43025, 53351, 60235, 86050, 106702, 120470, 266755, 301175, 373457, 533510, 602350, 746914, 1333775, 1867285, 2667550, 3734570, 9336425, 18672850]

約数ペア:

[(1, 18672850), (2, 9336425), (5, 3734570), (7, 2667550), (10, 1867285), (14, 1333775), (25, 746914), (31, 602350), (35, 533510), (50, 373457), (62, 301175), (70, 266755), (155, 120470), (175, 106702), (217, 86050), (310, 60235), (350, 53351), (434, 43025), (775, 24094), (1085, 17210), (1550, 12047), (1721, 10850), (2170, 8605), (3442, 5425)]