21801360

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{683}}^1$

素因数の和:725

約数の個数: 160

約数和(自身を含む): 81423360

約数和(自身を除く): 59622000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 48, 56, 57, 60, 70, 76, 80, 84, 95, 105, 112, 114, 120, 133, 140, 152, 168, 190, 210, 228, 240, 266, 280, 285, 304, 336, 380, 399, 420, 456, 532, 560, 570, 665, 683, 760, 798, 840, 912, 1064, 1140, 1330, 1366, 1520, 1596, 1680, 1995, 2049, 2128, 2280, 2660, 2732, 3192, 3415, 3990, 4098, 4560, 4781, 5320, 5464, 6384, 6830, 7980, 8196, 9562, 10245, 10640, 10928, 12977, 13660, 14343, 15960, 16392, 19124, 20490, 23905, 25954, 27320, 28686, 31920, 32784, 38248, 38931, 40980, 47810, 51908, 54640, 57372, 64885, 71715, 76496, 77862, 81960, 90839, 95620, 103816, 114744, 129770, 143430, 155724, 163920, 181678, 191240, 194655, 207632, 229488, 259540, 272517, 286860, 311448, 363356, 382480, 389310, 454195, 519080, 545034, 573720, 622896, 726712, 778620, 908390, 1038160, 1090068, 1147440, 1362585, 1453424, 1557240, 1816780, 2180136, 2725170, 3114480, 3633560, 4360272, 5450340, 7267120, 10900680, 21801360]

約数ペア:

[(1, 21801360), (2, 10900680), (3, 7267120), (4, 5450340), (5, 4360272), (6, 3633560), (7, 3114480), (8, 2725170), (10, 2180136), (12, 1816780), (14, 1557240), (15, 1453424), (16, 1362585), (19, 1147440), (20, 1090068), (21, 1038160), (24, 908390), (28, 778620), (30, 726712), (35, 622896), (38, 573720), (40, 545034), (42, 519080), (48, 454195), (56, 389310), (57, 382480), (60, 363356), (70, 311448), (76, 286860), (80, 272517), (84, 259540), (95, 229488), (105, 207632), (112, 194655), (114, 191240), (120, 181678), (133, 163920), (140, 155724), (152, 143430), (168, 129770), (190, 114744), (210, 103816), (228, 95620), (240, 90839), (266, 81960), (280, 77862), (285, 76496), (304, 71715), (336, 64885), (380, 57372), (399, 54640), (420, 51908), (456, 47810), (532, 40980), (560, 38931), (570, 38248), (665, 32784), (683, 31920), (760, 28686), (798, 27320), (840, 25954), (912, 23905), (1064, 20490), (1140, 19124), (1330, 16392), (1366, 15960), (1520, 14343), (1596, 13660), (1680, 12977), (1995, 10928), (2049, 10640), (2128, 10245), (2280, 9562), (2660, 8196), (2732, 7980), (3192, 6830), (3415, 6384), (3990, 5464), (4098, 5320), (4560, 4781)]