239881720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:725

約数の個数: 128

約数和(自身を含む): 627056640

約数和(自身を除く): 387174920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 31, 40, 46, 52, 62, 65, 92, 104, 115, 124, 130, 155, 184, 230, 248, 260, 299, 310, 403, 460, 520, 598, 620, 647, 713, 806, 920, 1196, 1240, 1294, 1426, 1495, 1612, 2015, 2392, 2588, 2852, 2990, 3224, 3235, 3565, 4030, 5176, 5704, 5980, 6470, 7130, 8060, 8411, 9269, 11960, 12940, 14260, 14881, 16120, 16822, 18538, 20057, 25880, 28520, 29762, 33644, 37076, 40114, 42055, 46345, 59524, 67288, 74152, 74405, 80228, 84110, 92690, 100285, 119048, 148810, 160456, 168220, 185380, 193453, 200570, 260741, 297620, 336440, 370760, 386906, 401140, 461311, 521482, 595240, 773812, 802280, 922622, 967265, 1042964, 1303705, 1547624, 1845244, 1934530, 2085928, 2306555, 2607410, 3690488, 3869060, 4613110, 5214820, 5997043, 7738120, 9226220, 10429640, 11994086, 18452440, 23988172, 29985215, 47976344, 59970430, 119940860, 239881720]

約数ペア:

[(1, 239881720), (2, 119940860), (4, 59970430), (5, 47976344), (8, 29985215), (10, 23988172), (13, 18452440), (20, 11994086), (23, 10429640), (26, 9226220), (31, 7738120), (40, 5997043), (46, 5214820), (52, 4613110), (62, 3869060), (65, 3690488), (92, 2607410), (104, 2306555), (115, 2085928), (124, 1934530), (130, 1845244), (155, 1547624), (184, 1303705), (230, 1042964), (248, 967265), (260, 922622), (299, 802280), (310, 773812), (403, 595240), (460, 521482), (520, 461311), (598, 401140), (620, 386906), (647, 370760), (713, 336440), (806, 297620), (920, 260741), (1196, 200570), (1240, 193453), (1294, 185380), (1426, 168220), (1495, 160456), (1612, 148810), (2015, 119048), (2392, 100285), (2588, 92690), (2852, 84110), (2990, 80228), (3224, 74405), (3235, 74152), (3565, 67288), (4030, 59524), (5176, 46345), (5704, 42055), (5980, 40114), (6470, 37076), (7130, 33644), (8060, 29762), (8411, 28520), (9269, 25880), (11960, 20057), (12940, 18538), (14260, 16822), (14881, 16120)]