21117180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{367}}^1$

素因数の和:523

約数の個数: 96

約数和(自身を含む): 68253696

約数和(自身を除く): 47136516

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 137, 140, 210, 274, 367, 411, 420, 548, 685, 734, 822, 959, 1101, 1370, 1468, 1644, 1835, 1918, 2055, 2202, 2569, 2740, 2877, 3670, 3836, 4110, 4404, 4795, 5138, 5505, 5754, 7340, 7707, 8220, 9590, 10276, 11010, 11508, 12845, 14385, 15414, 19180, 22020, 25690, 28770, 30828, 38535, 50279, 51380, 57540, 77070, 100558, 150837, 154140, 201116, 251395, 301674, 351953, 502790, 603348, 703906, 754185, 1005580, 1055859, 1407812, 1508370, 1759765, 2111718, 3016740, 3519530, 4223436, 5279295, 7039060, 10558590, 21117180]

約数ペア:

[(1, 21117180), (2, 10558590), (3, 7039060), (4, 5279295), (5, 4223436), (6, 3519530), (7, 3016740), (10, 2111718), (12, 1759765), (14, 1508370), (15, 1407812), (20, 1055859), (21, 1005580), (28, 754185), (30, 703906), (35, 603348), (42, 502790), (60, 351953), (70, 301674), (84, 251395), (105, 201116), (137, 154140), (140, 150837), (210, 100558), (274, 77070), (367, 57540), (411, 51380), (420, 50279), (548, 38535), (685, 30828), (734, 28770), (822, 25690), (959, 22020), (1101, 19180), (1370, 15414), (1468, 14385), (1644, 12845), (1835, 11508), (1918, 11010), (2055, 10276), (2202, 9590), (2569, 8220), (2740, 7707), (2877, 7340), (3670, 5754), (3836, 5505), (4110, 5138), (4404, 4795)]