21218760

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:122

約数の個数: 192

約数和(自身を含む): 74692800

約数和(自身を除く): 53474040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 37, 40, 45, 54, 59, 60, 72, 74, 81, 90, 108, 111, 118, 120, 135, 148, 162, 177, 180, 185, 216, 222, 236, 243, 270, 295, 296, 324, 333, 354, 360, 370, 405, 444, 472, 486, 531, 540, 555, 590, 648, 666, 708, 740, 810, 885, 888, 972, 999, 1062, 1080, 1110, 1180, 1215, 1332, 1416, 1480, 1593, 1620, 1665, 1770, 1944, 1998, 2124, 2183, 2220, 2360, 2430, 2655, 2664, 2997, 3186, 3240, 3330, 3540, 3996, 4248, 4366, 4440, 4779, 4860, 4995, 5310, 5994, 6372, 6549, 6660, 7080, 7965, 7992, 8732, 8991, 9558, 9720, 9990, 10620, 10915, 11988, 12744, 13098, 13320, 14337, 14985, 15930, 17464, 17982, 19116, 19647, 19980, 21240, 21830, 23895, 23976, 26196, 28674, 29970, 31860, 32745, 35964, 38232, 39294, 39960, 43660, 44955, 47790, 52392, 57348, 58941, 59940, 63720, 65490, 71685, 71928, 78588, 87320, 89910, 95580, 98235, 114696, 117882, 119880, 130980, 143370, 157176, 176823, 179820, 191160, 196470, 235764, 261960, 286740, 294705, 353646, 359640, 392940, 471528, 530469, 573480, 589410, 707292, 785880, 884115, 1060938, 1178820, 1414584, 1768230, 2121876, 2357640, 2652345, 3536460, 4243752, 5304690, 7072920, 10609380, 21218760]

約数ペア:

[(1, 21218760), (2, 10609380), (3, 7072920), (4, 5304690), (5, 4243752), (6, 3536460), (8, 2652345), (9, 2357640), (10, 2121876), (12, 1768230), (15, 1414584), (18, 1178820), (20, 1060938), (24, 884115), (27, 785880), (30, 707292), (36, 589410), (37, 573480), (40, 530469), (45, 471528), (54, 392940), (59, 359640), (60, 353646), (72, 294705), (74, 286740), (81, 261960), (90, 235764), (108, 196470), (111, 191160), (118, 179820), (120, 176823), (135, 157176), (148, 143370), (162, 130980), (177, 119880), (180, 117882), (185, 114696), (216, 98235), (222, 95580), (236, 89910), (243, 87320), (270, 78588), (295, 71928), (296, 71685), (324, 65490), (333, 63720), (354, 59940), (360, 58941), (370, 57348), (405, 52392), (444, 47790), (472, 44955), (486, 43660), (531, 39960), (540, 39294), (555, 38232), (590, 35964), (648, 32745), (666, 31860), (708, 29970), (740, 28674), (810, 26196), (885, 23976), (888, 23895), (972, 21830), (999, 21240), (1062, 19980), (1080, 19647), (1110, 19116), (1180, 17982), (1215, 17464), (1332, 15930), (1416, 14985), (1480, 14337), (1593, 13320), (1620, 13098), (1665, 12744), (1770, 11988), (1944, 10915), (1998, 10620), (2124, 9990), (2183, 9720), (2220, 9558), (2360, 8991), (2430, 8732), (2655, 7992), (2664, 7965), (2997, 7080), (3186, 6660), (3240, 6549), (3330, 6372), (3540, 5994), (3996, 5310), (4248, 4995), (4366, 4860), (4440, 4779)]