205129980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{491}}^1$

素因数の和:728

約数の個数: 144

約数和(自身を含む): 683399808

約数和(自身を除く): 478269828

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 211, 220, 330, 396, 422, 491, 495, 633, 660, 844, 982, 990, 1055, 1266, 1473, 1899, 1964, 1980, 2110, 2321, 2455, 2532, 2946, 3165, 3798, 4220, 4419, 4642, 4910, 5401, 5892, 6330, 6963, 7365, 7596, 8838, 9284, 9495, 9820, 10802, 11605, 12660, 13926, 14730, 16203, 17676, 18990, 20889, 21604, 22095, 23210, 27005, 27852, 29460, 32406, 34815, 37980, 41778, 44190, 46420, 48609, 54010, 64812, 69630, 81015, 83556, 88380, 97218, 103601, 104445, 108020, 139260, 162030, 194436, 207202, 208890, 243045, 310803, 324060, 414404, 417780, 486090, 518005, 621606, 932409, 972180, 1036010, 1139611, 1243212, 1554015, 1864818, 2072020, 2279222, 3108030, 3418833, 3729636, 4558444, 4662045, 5698055, 6216060, 6837666, 9324090, 10256499, 11396110, 13675332, 17094165, 18648180, 20512998, 22792220, 34188330, 41025996, 51282495, 68376660, 102564990, 205129980]

約数ペア:

[(1, 205129980), (2, 102564990), (3, 68376660), (4, 51282495), (5, 41025996), (6, 34188330), (9, 22792220), (10, 20512998), (11, 18648180), (12, 17094165), (15, 13675332), (18, 11396110), (20, 10256499), (22, 9324090), (30, 6837666), (33, 6216060), (36, 5698055), (44, 4662045), (45, 4558444), (55, 3729636), (60, 3418833), (66, 3108030), (90, 2279222), (99, 2072020), (110, 1864818), (132, 1554015), (165, 1243212), (180, 1139611), (198, 1036010), (211, 972180), (220, 932409), (330, 621606), (396, 518005), (422, 486090), (491, 417780), (495, 414404), (633, 324060), (660, 310803), (844, 243045), (982, 208890), (990, 207202), (1055, 194436), (1266, 162030), (1473, 139260), (1899, 108020), (1964, 104445), (1980, 103601), (2110, 97218), (2321, 88380), (2455, 83556), (2532, 81015), (2946, 69630), (3165, 64812), (3798, 54010), (4220, 48609), (4419, 46420), (4642, 44190), (4910, 41778), (5401, 37980), (5892, 34815), (6330, 32406), (6963, 29460), (7365, 27852), (7596, 27005), (8838, 23210), (9284, 22095), (9495, 21604), (9820, 20889), (10802, 18990), (11605, 17676), (12660, 16203), (13926, 14730)]