20867490

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:265

約数の個数: 128

約数和(自身を含む): 64995840

約数和(自身を除く): 44128350

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 61, 63, 70, 90, 105, 122, 126, 135, 181, 183, 189, 210, 270, 305, 315, 362, 366, 378, 427, 543, 549, 610, 630, 854, 905, 915, 945, 1086, 1098, 1267, 1281, 1629, 1647, 1810, 1830, 1890, 2135, 2534, 2562, 2715, 2745, 3258, 3294, 3801, 3843, 4270, 4887, 5430, 5490, 6335, 6405, 7602, 7686, 8145, 8235, 9774, 11041, 11403, 11529, 12670, 12810, 16290, 16470, 19005, 19215, 22082, 22806, 23058, 24435, 33123, 34209, 38010, 38430, 48870, 55205, 57015, 57645, 66246, 68418, 77287, 99369, 110410, 114030, 115290, 154574, 165615, 171045, 198738, 231861, 298107, 331230, 342090, 386435, 463722, 496845, 596214, 695583, 772870, 993690, 1159305, 1391166, 1490535, 2086749, 2318610, 2981070, 3477915, 4173498, 6955830, 10433745, 20867490]

約数ペア:

[(1, 20867490), (2, 10433745), (3, 6955830), (5, 4173498), (6, 3477915), (7, 2981070), (9, 2318610), (10, 2086749), (14, 1490535), (15, 1391166), (18, 1159305), (21, 993690), (27, 772870), (30, 695583), (35, 596214), (42, 496845), (45, 463722), (54, 386435), (61, 342090), (63, 331230), (70, 298107), (90, 231861), (105, 198738), (122, 171045), (126, 165615), (135, 154574), (181, 115290), (183, 114030), (189, 110410), (210, 99369), (270, 77287), (305, 68418), (315, 66246), (362, 57645), (366, 57015), (378, 55205), (427, 48870), (543, 38430), (549, 38010), (610, 34209), (630, 33123), (854, 24435), (905, 23058), (915, 22806), (945, 22082), (1086, 19215), (1098, 19005), (1267, 16470), (1281, 16290), (1629, 12810), (1647, 12670), (1810, 11529), (1830, 11403), (1890, 11041), (2135, 9774), (2534, 8235), (2562, 8145), (2715, 7686), (2745, 7602), (3258, 6405), (3294, 6335), (3801, 5490), (3843, 5430), (4270, 4887)]