64996720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{701}}^1$

素因数の和:794

約数の個数: 80

約数和(自身を含む): 161909280

約数和(自身を除く): 96912560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 61, 76, 80, 95, 122, 152, 190, 244, 304, 305, 380, 488, 610, 701, 760, 976, 1159, 1220, 1402, 1520, 2318, 2440, 2804, 3505, 4636, 4880, 5608, 5795, 7010, 9272, 11216, 11590, 13319, 14020, 18544, 23180, 26638, 28040, 42761, 46360, 53276, 56080, 66595, 85522, 92720, 106552, 133190, 171044, 213104, 213805, 266380, 342088, 427610, 532760, 684176, 812459, 855220, 1065520, 1624918, 1710440, 3249836, 3420880, 4062295, 6499672, 8124590, 12999344, 16249180, 32498360, 64996720]

約数ペア:

[(1, 64996720), (2, 32498360), (4, 16249180), (5, 12999344), (8, 8124590), (10, 6499672), (16, 4062295), (19, 3420880), (20, 3249836), (38, 1710440), (40, 1624918), (61, 1065520), (76, 855220), (80, 812459), (95, 684176), (122, 532760), (152, 427610), (190, 342088), (244, 266380), (304, 213805), (305, 213104), (380, 171044), (488, 133190), (610, 106552), (701, 92720), (760, 85522), (976, 66595), (1159, 56080), (1220, 53276), (1402, 46360), (1520, 42761), (2318, 28040), (2440, 26638), (2804, 23180), (3505, 18544), (4636, 14020), (4880, 13319), (5608, 11590), (5795, 11216), (7010, 9272)]