21173220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:226

約数の個数: 144

約数和(自身を含む): 69713280

約数和(自身を除く): 48540060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 41, 45, 57, 60, 76, 82, 90, 95, 114, 123, 151, 164, 171, 180, 190, 205, 228, 246, 285, 302, 342, 369, 380, 410, 453, 492, 570, 604, 615, 684, 738, 755, 779, 820, 855, 906, 1140, 1230, 1359, 1476, 1510, 1558, 1710, 1812, 1845, 2265, 2337, 2460, 2718, 2869, 3020, 3116, 3420, 3690, 3895, 4530, 4674, 5436, 5738, 6191, 6795, 7011, 7380, 7790, 8607, 9060, 9348, 11476, 11685, 12382, 13590, 14022, 14345, 15580, 17214, 18573, 23370, 24764, 25821, 27180, 28044, 28690, 30955, 34428, 35055, 37146, 43035, 46740, 51642, 55719, 57380, 61910, 70110, 74292, 86070, 92865, 103284, 111438, 117629, 123820, 129105, 140220, 172140, 185730, 222876, 235258, 258210, 278595, 352887, 371460, 470516, 516420, 557190, 588145, 705774, 1058661, 1114380, 1176290, 1411548, 1764435, 2117322, 2352580, 3528870, 4234644, 5293305, 7057740, 10586610, 21173220]

約数ペア:

[(1, 21173220), (2, 10586610), (3, 7057740), (4, 5293305), (5, 4234644), (6, 3528870), (9, 2352580), (10, 2117322), (12, 1764435), (15, 1411548), (18, 1176290), (19, 1114380), (20, 1058661), (30, 705774), (36, 588145), (38, 557190), (41, 516420), (45, 470516), (57, 371460), (60, 352887), (76, 278595), (82, 258210), (90, 235258), (95, 222876), (114, 185730), (123, 172140), (151, 140220), (164, 129105), (171, 123820), (180, 117629), (190, 111438), (205, 103284), (228, 92865), (246, 86070), (285, 74292), (302, 70110), (342, 61910), (369, 57380), (380, 55719), (410, 51642), (453, 46740), (492, 43035), (570, 37146), (604, 35055), (615, 34428), (684, 30955), (738, 28690), (755, 28044), (779, 27180), (820, 25821), (855, 24764), (906, 23370), (1140, 18573), (1230, 17214), (1359, 15580), (1476, 14345), (1510, 14022), (1558, 13590), (1710, 12382), (1812, 11685), (1845, 11476), (2265, 9348), (2337, 9060), (2460, 8607), (2718, 7790), (2869, 7380), (3020, 7011), (3116, 6795), (3420, 6191), (3690, 5738), (3895, 5436), (4530, 4674)]