21231700

素因数分解:

$2^2\times 5^2\times 7^3\times {\mathrm{619}}^1$

素因数の和:654

約数の個数: 72

約数和(自身を含む): 53816000

約数和(自身を除く): 32584300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 343, 350, 490, 619, 686, 700, 980, 1225, 1238, 1372, 1715, 2450, 2476, 3095, 3430, 4333, 4900, 6190, 6860, 8575, 8666, 12380, 15475, 17150, 17332, 21665, 30331, 30950, 34300, 43330, 60662, 61900, 86660, 108325, 121324, 151655, 212317, 216650, 303310, 424634, 433300, 606620, 758275, 849268, 1061585, 1516550, 2123170, 3033100, 4246340, 5307925, 10615850, 21231700]

約数ペア:

[(1, 21231700), (2, 10615850), (4, 5307925), (5, 4246340), (7, 3033100), (10, 2123170), (14, 1516550), (20, 1061585), (25, 849268), (28, 758275), (35, 606620), (49, 433300), (50, 424634), (70, 303310), (98, 216650), (100, 212317), (140, 151655), (175, 121324), (196, 108325), (245, 86660), (343, 61900), (350, 60662), (490, 43330), (619, 34300), (686, 30950), (700, 30331), (980, 21665), (1225, 17332), (1238, 17150), (1372, 15475), (1715, 12380), (2450, 8666), (2476, 8575), (3095, 6860), (3430, 6190), (4333, 4900)]