260553720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{991}}^1$

素因数の和:1325

約数の個数: 128

約数和(自身を含む): 897085440

約数和(自身を除く): 636531720

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, 70, 84, 105, 120, 140, 168, 210, 280, 313, 420, 626, 840, 939, 991, 1252, 1565, 1878, 1982, 2191, 2504, 2973, 3130, 3756, 3964, 4382, 4695, 4955, 5946, 6260, 6573, 6937, 7512, 7928, 8764, 9390, 9910, 10955, 11892, 12520, 13146, 13874, 14865, 17528, 18780, 19820, 20811, 21910, 23784, 26292, 27748, 29730, 32865, 34685, 37560, 39640, 41622, 43820, 52584, 55496, 59460, 65730, 69370, 83244, 87640, 104055, 118920, 131460, 138740, 166488, 208110, 262920, 277480, 310183, 416220, 620366, 832440, 930549, 1240732, 1550915, 1861098, 2171281, 2481464, 3101830, 3722196, 4342562, 4652745, 6203660, 6513843, 7444392, 8685124, 9305490, 10856405, 12407320, 13027686, 17370248, 18610980, 21712810, 26055372, 32569215, 37221960, 43425620, 52110744, 65138430, 86851240, 130276860, 260553720]

約数ペア:

[(1, 260553720), (2, 130276860), (3, 86851240), (4, 65138430), (5, 52110744), (6, 43425620), (7, 37221960), (8, 32569215), (10, 26055372), (12, 21712810), (14, 18610980), (15, 17370248), (20, 13027686), (21, 12407320), (24, 10856405), (28, 9305490), (30, 8685124), (35, 7444392), (40, 6513843), (42, 6203660), (56, 4652745), (60, 4342562), (70, 3722196), (84, 3101830), (105, 2481464), (120, 2171281), (140, 1861098), (168, 1550915), (210, 1240732), (280, 930549), (313, 832440), (420, 620366), (626, 416220), (840, 310183), (939, 277480), (991, 262920), (1252, 208110), (1565, 166488), (1878, 138740), (1982, 131460), (2191, 118920), (2504, 104055), (2973, 87640), (3130, 83244), (3756, 69370), (3964, 65730), (4382, 59460), (4695, 55496), (4955, 52584), (5946, 43820), (6260, 41622), (6573, 39640), (6937, 37560), (7512, 34685), (7928, 32865), (8764, 29730), (9390, 27748), (9910, 26292), (10955, 23784), (11892, 21910), (12520, 20811), (13146, 19820), (13874, 18780), (14865, 17528)]