128880800

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:239

約数の個数: 144

約数和(自身を含む): 339040800

約数和(自身を除く): 210160000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 61, 76, 80, 95, 100, 122, 139, 152, 160, 190, 200, 244, 278, 304, 305, 380, 400, 475, 488, 556, 608, 610, 695, 760, 800, 950, 976, 1112, 1159, 1220, 1390, 1520, 1525, 1900, 1952, 2224, 2318, 2440, 2641, 2780, 3040, 3050, 3475, 3800, 4448, 4636, 4880, 5282, 5560, 5795, 6100, 6950, 7600, 8479, 9272, 9760, 10564, 11120, 11590, 12200, 13205, 13900, 15200, 16958, 18544, 21128, 22240, 23180, 24400, 26410, 27800, 28975, 33916, 37088, 42256, 42395, 46360, 48800, 52820, 55600, 57950, 66025, 67832, 84512, 84790, 92720, 105640, 111200, 115900, 132050, 135664, 161101, 169580, 185440, 211280, 211975, 231800, 264100, 271328, 322202, 339160, 422560, 423950, 463600, 528200, 644404, 678320, 805505, 847900, 927200, 1056400, 1288808, 1356640, 1611010, 1695800, 2112800, 2577616, 3222020, 3391600, 4027525, 5155232, 6444040, 6783200, 8055050, 12888080, 16110100, 25776160, 32220200, 64440400, 128880800]

約数ペア:

[(1, 128880800), (2, 64440400), (4, 32220200), (5, 25776160), (8, 16110100), (10, 12888080), (16, 8055050), (19, 6783200), (20, 6444040), (25, 5155232), (32, 4027525), (38, 3391600), (40, 3222020), (50, 2577616), (61, 2112800), (76, 1695800), (80, 1611010), (95, 1356640), (100, 1288808), (122, 1056400), (139, 927200), (152, 847900), (160, 805505), (190, 678320), (200, 644404), (244, 528200), (278, 463600), (304, 423950), (305, 422560), (380, 339160), (400, 322202), (475, 271328), (488, 264100), (556, 231800), (608, 211975), (610, 211280), (695, 185440), (760, 169580), (800, 161101), (950, 135664), (976, 132050), (1112, 115900), (1159, 111200), (1220, 105640), (1390, 92720), (1520, 84790), (1525, 84512), (1900, 67832), (1952, 66025), (2224, 57950), (2318, 55600), (2440, 52820), (2641, 48800), (2780, 46360), (3040, 42395), (3050, 42256), (3475, 37088), (3800, 33916), (4448, 28975), (4636, 27800), (4880, 26410), (5282, 24400), (5560, 23180), (5795, 22240), (6100, 21128), (6950, 18544), (7600, 16958), (8479, 15200), (9272, 13900), (9760, 13205), (10564, 12200), (11120, 11590)]