64440400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:237

約数の個数: 120

約数和(自身を含む): 166829600

約数和(自身を除く): 102389200

約数列:

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

約数ペア:

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