20996360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{401}}^1$

素因数の和:447

約数の個数: 128

約数和(自身を含む): 62519040

約数和(自身を除く): 41522680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 17, 20, 22, 28, 34, 35, 40, 44, 55, 56, 68, 70, 77, 85, 88, 110, 119, 136, 140, 154, 170, 187, 220, 238, 280, 308, 340, 374, 385, 401, 440, 476, 595, 616, 680, 748, 770, 802, 935, 952, 1190, 1309, 1496, 1540, 1604, 1870, 2005, 2380, 2618, 2807, 3080, 3208, 3740, 4010, 4411, 4760, 5236, 5614, 6545, 6817, 7480, 8020, 8822, 10472, 11228, 13090, 13634, 14035, 16040, 17644, 22055, 22456, 26180, 27268, 28070, 30877, 34085, 35288, 44110, 47719, 52360, 54536, 56140, 61754, 68170, 74987, 88220, 95438, 112280, 123508, 136340, 149974, 154385, 176440, 190876, 238595, 247016, 272680, 299948, 308770, 374935, 381752, 477190, 524909, 599896, 617540, 749870, 954380, 1049818, 1235080, 1499740, 1908760, 2099636, 2624545, 2999480, 4199272, 5249090, 10498180, 20996360]

約数ペア:

[(1, 20996360), (2, 10498180), (4, 5249090), (5, 4199272), (7, 2999480), (8, 2624545), (10, 2099636), (11, 1908760), (14, 1499740), (17, 1235080), (20, 1049818), (22, 954380), (28, 749870), (34, 617540), (35, 599896), (40, 524909), (44, 477190), (55, 381752), (56, 374935), (68, 308770), (70, 299948), (77, 272680), (85, 247016), (88, 238595), (110, 190876), (119, 176440), (136, 154385), (140, 149974), (154, 136340), (170, 123508), (187, 112280), (220, 95438), (238, 88220), (280, 74987), (308, 68170), (340, 61754), (374, 56140), (385, 54536), (401, 52360), (440, 47719), (476, 44110), (595, 35288), (616, 34085), (680, 30877), (748, 28070), (770, 27268), (802, 26180), (935, 22456), (952, 22055), (1190, 17644), (1309, 16040), (1496, 14035), (1540, 13634), (1604, 13090), (1870, 11228), (2005, 10472), (2380, 8822), (2618, 8020), (2807, 7480), (3080, 6817), (3208, 6545), (3740, 5614), (4010, 5236), (4411, 4760)]