28279600

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^2$

素因数の和:159

約数の個数: 90

約数和(自身を含む): 72709260

約数和(自身を除く): 44429660

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 61, 76, 80, 95, 100, 122, 152, 190, 200, 244, 304, 305, 380, 400, 475, 488, 610, 760, 950, 976, 1159, 1220, 1520, 1525, 1900, 2318, 2440, 3050, 3721, 3800, 4636, 4880, 5795, 6100, 7442, 7600, 9272, 11590, 12200, 14884, 18544, 18605, 23180, 24400, 28975, 29768, 37210, 46360, 57950, 59536, 70699, 74420, 92720, 93025, 115900, 141398, 148840, 186050, 231800, 282796, 297680, 353495, 372100, 463600, 565592, 706990, 744200, 1131184, 1413980, 1488400, 1767475, 2827960, 3534950, 5655920, 7069900, 14139800, 28279600]

約数ペア:

[(1, 28279600), (2, 14139800), (4, 7069900), (5, 5655920), (8, 3534950), (10, 2827960), (16, 1767475), (19, 1488400), (20, 1413980), (25, 1131184), (38, 744200), (40, 706990), (50, 565592), (61, 463600), (76, 372100), (80, 353495), (95, 297680), (100, 282796), (122, 231800), (152, 186050), (190, 148840), (200, 141398), (244, 115900), (304, 93025), (305, 92720), (380, 74420), (400, 70699), (475, 59536), (488, 57950), (610, 46360), (760, 37210), (950, 29768), (976, 28975), (1159, 24400), (1220, 23180), (1520, 18605), (1525, 18544), (1900, 14884), (2318, 12200), (2440, 11590), (3050, 9272), (3721, 7600), (3800, 7442), (4636, 6100), (4880, 5795)]