28186880

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1$

素因数の和:120

約数の個数: 108

約数和(自身を含む): 72425052

約数和(自身を除く): 44238172

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 61, 64, 76, 80, 95, 122, 128, 152, 160, 190, 244, 256, 304, 305, 320, 361, 380, 488, 608, 610, 640, 722, 760, 976, 1159, 1216, 1220, 1280, 1444, 1520, 1805, 1952, 2318, 2432, 2440, 2888, 3040, 3610, 3904, 4636, 4864, 4880, 5776, 5795, 6080, 7220, 7808, 9272, 9760, 11552, 11590, 12160, 14440, 15616, 18544, 19520, 22021, 23104, 23180, 24320, 28880, 37088, 39040, 44042, 46208, 46360, 57760, 74176, 78080, 88084, 92416, 92720, 110105, 115520, 148352, 176168, 185440, 220210, 231040, 296704, 352336, 370880, 440420, 462080, 704672, 741760, 880840, 1409344, 1483520, 1761680, 2818688, 3523360, 5637376, 7046720, 14093440, 28186880]

約数ペア:

[(1, 28186880), (2, 14093440), (4, 7046720), (5, 5637376), (8, 3523360), (10, 2818688), (16, 1761680), (19, 1483520), (20, 1409344), (32, 880840), (38, 741760), (40, 704672), (61, 462080), (64, 440420), (76, 370880), (80, 352336), (95, 296704), (122, 231040), (128, 220210), (152, 185440), (160, 176168), (190, 148352), (244, 115520), (256, 110105), (304, 92720), (305, 92416), (320, 88084), (361, 78080), (380, 74176), (488, 57760), (608, 46360), (610, 46208), (640, 44042), (722, 39040), (760, 37088), (976, 28880), (1159, 24320), (1216, 23180), (1220, 23104), (1280, 22021), (1444, 19520), (1520, 18544), (1805, 15616), (1952, 14440), (2318, 12160), (2432, 11590), (2440, 11552), (2888, 9760), (3040, 9272), (3610, 7808), (3904, 7220), (4636, 6080), (4864, 5795), (4880, 5776)]