82781880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:381

約数の個数: 128

約数和(自身を含む): 259269120

約数和(自身を除く): 176487240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 61, 86, 120, 122, 129, 172, 183, 215, 244, 258, 263, 305, 344, 366, 430, 488, 516, 526, 610, 645, 732, 789, 860, 915, 1032, 1052, 1220, 1290, 1315, 1464, 1578, 1720, 1830, 2104, 2440, 2580, 2623, 2630, 3156, 3660, 3945, 5160, 5246, 5260, 6312, 7320, 7869, 7890, 10492, 10520, 11309, 13115, 15738, 15780, 16043, 20984, 22618, 26230, 31476, 31560, 32086, 33927, 39345, 45236, 48129, 52460, 56545, 62952, 64172, 67854, 78690, 80215, 90472, 96258, 104920, 113090, 128344, 135708, 157380, 160430, 169635, 192516, 226180, 240645, 271416, 314760, 320860, 339270, 385032, 452360, 481290, 641720, 678540, 689849, 962580, 1357080, 1379698, 1925160, 2069547, 2759396, 3449245, 4139094, 5518792, 6898490, 8278188, 10347735, 13796980, 16556376, 20695470, 27593960, 41390940, 82781880]

約数ペア:

[(1, 82781880), (2, 41390940), (3, 27593960), (4, 20695470), (5, 16556376), (6, 13796980), (8, 10347735), (10, 8278188), (12, 6898490), (15, 5518792), (20, 4139094), (24, 3449245), (30, 2759396), (40, 2069547), (43, 1925160), (60, 1379698), (61, 1357080), (86, 962580), (120, 689849), (122, 678540), (129, 641720), (172, 481290), (183, 452360), (215, 385032), (244, 339270), (258, 320860), (263, 314760), (305, 271416), (344, 240645), (366, 226180), (430, 192516), (488, 169635), (516, 160430), (526, 157380), (610, 135708), (645, 128344), (732, 113090), (789, 104920), (860, 96258), (915, 90472), (1032, 80215), (1052, 78690), (1220, 67854), (1290, 64172), (1315, 62952), (1464, 56545), (1578, 52460), (1720, 48129), (1830, 45236), (2104, 39345), (2440, 33927), (2580, 32086), (2623, 31560), (2630, 31476), (3156, 26230), (3660, 22618), (3945, 20984), (5160, 16043), (5246, 15780), (5260, 15738), (6312, 13115), (7320, 11309), (7869, 10520), (7890, 10492)]