21291900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{10139}}^1$

素因数の和:10163

約数の個数: 72

約数和(自身を含む): 70412160

約数和(自身を除く): 49120260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 10139, 20278, 30417, 40556, 50695, 60834, 70973, 101390, 121668, 141946, 152085, 202780, 212919, 253475, 283892, 304170, 354865, 425838, 506950, 608340, 709730, 760425, 851676, 1013900, 1064595, 1419460, 1520850, 1774325, 2129190, 3041700, 3548650, 4258380, 5322975, 7097300, 10645950, 21291900]

約数ペア:

[(1, 21291900), (2, 10645950), (3, 7097300), (4, 5322975), (5, 4258380), (6, 3548650), (7, 3041700), (10, 2129190), (12, 1774325), (14, 1520850), (15, 1419460), (20, 1064595), (21, 1013900), (25, 851676), (28, 760425), (30, 709730), (35, 608340), (42, 506950), (50, 425838), (60, 354865), (70, 304170), (75, 283892), (84, 253475), (100, 212919), (105, 202780), (140, 152085), (150, 141946), (175, 121668), (210, 101390), (300, 70973), (350, 60834), (420, 50695), (525, 40556), (700, 30417), (1050, 20278), (2100, 10139)]