21265380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:186

約数の個数: 144

約数和(自身を含む): 69049344

約数和(自身を除く): 47783964

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 37, 45, 60, 62, 74, 90, 93, 103, 111, 124, 148, 155, 180, 185, 186, 206, 222, 279, 309, 310, 333, 370, 372, 412, 444, 465, 515, 555, 558, 618, 620, 666, 740, 927, 930, 1030, 1110, 1116, 1147, 1236, 1332, 1395, 1545, 1665, 1854, 1860, 2060, 2220, 2294, 2790, 3090, 3193, 3330, 3441, 3708, 3811, 4588, 4635, 5580, 5735, 6180, 6386, 6660, 6882, 7622, 9270, 9579, 10323, 11433, 11470, 12772, 13764, 15244, 15965, 17205, 18540, 19055, 19158, 20646, 22866, 22940, 28737, 31930, 34299, 34410, 38110, 38316, 41292, 45732, 47895, 51615, 57165, 57474, 63860, 68598, 68820, 76220, 95790, 103230, 114330, 114948, 118141, 137196, 143685, 171495, 191580, 206460, 228660, 236282, 287370, 342990, 354423, 472564, 574740, 590705, 685980, 708846, 1063269, 1181410, 1417692, 1772115, 2126538, 2362820, 3544230, 4253076, 5316345, 7088460, 10632690, 21265380]

約数ペア:

[(1, 21265380), (2, 10632690), (3, 7088460), (4, 5316345), (5, 4253076), (6, 3544230), (9, 2362820), (10, 2126538), (12, 1772115), (15, 1417692), (18, 1181410), (20, 1063269), (30, 708846), (31, 685980), (36, 590705), (37, 574740), (45, 472564), (60, 354423), (62, 342990), (74, 287370), (90, 236282), (93, 228660), (103, 206460), (111, 191580), (124, 171495), (148, 143685), (155, 137196), (180, 118141), (185, 114948), (186, 114330), (206, 103230), (222, 95790), (279, 76220), (309, 68820), (310, 68598), (333, 63860), (370, 57474), (372, 57165), (412, 51615), (444, 47895), (465, 45732), (515, 41292), (555, 38316), (558, 38110), (618, 34410), (620, 34299), (666, 31930), (740, 28737), (927, 22940), (930, 22866), (1030, 20646), (1110, 19158), (1116, 19055), (1147, 18540), (1236, 17205), (1332, 15965), (1395, 15244), (1545, 13764), (1665, 12772), (1854, 11470), (1860, 11433), (2060, 10323), (2220, 9579), (2294, 9270), (2790, 7622), (3090, 6882), (3193, 6660), (3330, 6386), (3441, 6180), (3708, 5735), (3811, 5580), (4588, 4635)]