279926240

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{761}}^1$

素因数の和:817

約数の個数: 144

約数和(自身を含む): 766175760

約数和(自身を除く): 486249520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 32, 38, 40, 44, 55, 76, 80, 88, 95, 110, 121, 152, 160, 176, 190, 209, 220, 242, 304, 352, 380, 418, 440, 484, 605, 608, 760, 761, 836, 880, 968, 1045, 1210, 1520, 1522, 1672, 1760, 1936, 2090, 2299, 2420, 3040, 3044, 3344, 3805, 3872, 4180, 4598, 4840, 6088, 6688, 7610, 8360, 8371, 9196, 9680, 11495, 12176, 14459, 15220, 16720, 16742, 18392, 19360, 22990, 24352, 28918, 30440, 33440, 33484, 36784, 41855, 45980, 57836, 60880, 66968, 72295, 73568, 83710, 91960, 92081, 115672, 121760, 133936, 144590, 159049, 167420, 183920, 184162, 231344, 267872, 289180, 318098, 334840, 367840, 368324, 460405, 462688, 578360, 636196, 669680, 736648, 795245, 920810, 1156720, 1272392, 1339360, 1473296, 1590490, 1749539, 1841620, 2313440, 2544784, 2946592, 3180980, 3499078, 3683240, 5089568, 6361960, 6998156, 7366480, 8747695, 12723920, 13996312, 14732960, 17495390, 25447840, 27992624, 34990780, 55985248, 69981560, 139963120, 279926240]

約数ペア:

[(1, 279926240), (2, 139963120), (4, 69981560), (5, 55985248), (8, 34990780), (10, 27992624), (11, 25447840), (16, 17495390), (19, 14732960), (20, 13996312), (22, 12723920), (32, 8747695), (38, 7366480), (40, 6998156), (44, 6361960), (55, 5089568), (76, 3683240), (80, 3499078), (88, 3180980), (95, 2946592), (110, 2544784), (121, 2313440), (152, 1841620), (160, 1749539), (176, 1590490), (190, 1473296), (209, 1339360), (220, 1272392), (242, 1156720), (304, 920810), (352, 795245), (380, 736648), (418, 669680), (440, 636196), (484, 578360), (605, 462688), (608, 460405), (760, 368324), (761, 367840), (836, 334840), (880, 318098), (968, 289180), (1045, 267872), (1210, 231344), (1520, 184162), (1522, 183920), (1672, 167420), (1760, 159049), (1936, 144590), (2090, 133936), (2299, 121760), (2420, 115672), (3040, 92081), (3044, 91960), (3344, 83710), (3805, 73568), (3872, 72295), (4180, 66968), (4598, 60880), (4840, 57836), (6088, 45980), (6688, 41855), (7610, 36784), (8360, 33484), (8371, 33440), (9196, 30440), (9680, 28918), (11495, 24352), (12176, 22990), (14459, 19360), (15220, 18392), (16720, 16742)]