18087720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{353}}^1$

素因数の和:435

約数の個数: 128

約数和(自身を含む): 63210240

約数和(自身を除く): 45122520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 61, 70, 84, 105, 120, 122, 140, 168, 183, 210, 244, 280, 305, 353, 366, 420, 427, 488, 610, 706, 732, 840, 854, 915, 1059, 1220, 1281, 1412, 1464, 1708, 1765, 1830, 2118, 2135, 2440, 2471, 2562, 2824, 3416, 3530, 3660, 4236, 4270, 4942, 5124, 5295, 6405, 7060, 7320, 7413, 8472, 8540, 9884, 10248, 10590, 12355, 12810, 14120, 14826, 17080, 19768, 21180, 21533, 24710, 25620, 29652, 37065, 42360, 43066, 49420, 51240, 59304, 64599, 74130, 86132, 98840, 107665, 129198, 148260, 150731, 172264, 215330, 258396, 296520, 301462, 322995, 430660, 452193, 516792, 602924, 645990, 753655, 861320, 904386, 1205848, 1291980, 1507310, 1808772, 2260965, 2583960, 3014620, 3617544, 4521930, 6029240, 9043860, 18087720]

約数ペア:

[(1, 18087720), (2, 9043860), (3, 6029240), (4, 4521930), (5, 3617544), (6, 3014620), (7, 2583960), (8, 2260965), (10, 1808772), (12, 1507310), (14, 1291980), (15, 1205848), (20, 904386), (21, 861320), (24, 753655), (28, 645990), (30, 602924), (35, 516792), (40, 452193), (42, 430660), (56, 322995), (60, 301462), (61, 296520), (70, 258396), (84, 215330), (105, 172264), (120, 150731), (122, 148260), (140, 129198), (168, 107665), (183, 98840), (210, 86132), (244, 74130), (280, 64599), (305, 59304), (353, 51240), (366, 49420), (420, 43066), (427, 42360), (488, 37065), (610, 29652), (706, 25620), (732, 24710), (840, 21533), (854, 21180), (915, 19768), (1059, 17080), (1220, 14826), (1281, 14120), (1412, 12810), (1464, 12355), (1708, 10590), (1765, 10248), (1830, 9884), (2118, 8540), (2135, 8472), (2440, 7413), (2471, 7320), (2562, 7060), (2824, 6405), (3416, 5295), (3530, 5124), (3660, 4942), (4236, 4270)]