20243000

素因数分解:

$2^3\times 5^3\times {\mathrm{31}}^1\times {\mathrm{653}}^1$

素因数の和:705

約数の個数: 64

約数和(自身を含む): 48971520

約数和(自身を除く): 28728520

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 500, 620, 653, 775, 1000, 1240, 1306, 1550, 2612, 3100, 3265, 3875, 5224, 6200, 6530, 7750, 13060, 15500, 16325, 20243, 26120, 31000, 32650, 40486, 65300, 80972, 81625, 101215, 130600, 161944, 163250, 202430, 326500, 404860, 506075, 653000, 809720, 1012150, 2024300, 2530375, 4048600, 5060750, 10121500, 20243000]

約数ペア:

[(1, 20243000), (2, 10121500), (4, 5060750), (5, 4048600), (8, 2530375), (10, 2024300), (20, 1012150), (25, 809720), (31, 653000), (40, 506075), (50, 404860), (62, 326500), (100, 202430), (124, 163250), (125, 161944), (155, 130600), (200, 101215), (248, 81625), (250, 80972), (310, 65300), (500, 40486), (620, 32650), (653, 31000), (775, 26120), (1000, 20243), (1240, 16325), (1306, 15500), (1550, 13060), (2612, 7750), (3100, 6530), (3265, 6200), (3875, 5224)]