20438964

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{367}}^1$

素因数の和:414

約数の個数: 144

約数和(自身を含む): 67511808

約数和(自身を除く): 47072844

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 17, 18, 21, 26, 28, 34, 36, 39, 42, 51, 52, 63, 68, 78, 84, 91, 102, 117, 119, 126, 153, 156, 182, 204, 221, 234, 238, 252, 273, 306, 357, 364, 367, 442, 468, 476, 546, 612, 663, 714, 734, 819, 884, 1071, 1092, 1101, 1326, 1428, 1468, 1547, 1638, 1989, 2142, 2202, 2569, 2652, 3094, 3276, 3303, 3978, 4284, 4404, 4641, 4771, 5138, 6188, 6239, 6606, 7707, 7956, 9282, 9542, 10276, 12478, 13212, 13923, 14313, 15414, 18564, 18717, 19084, 23121, 24956, 27846, 28626, 30828, 33397, 37434, 42939, 43673, 46242, 55692, 56151, 57252, 66794, 74868, 81107, 85878, 87346, 92484, 100191, 112302, 131019, 133588, 162214, 171756, 174692, 200382, 224604, 243321, 262038, 300573, 324428, 393057, 400764, 486642, 524076, 567749, 601146, 729963, 786114, 973284, 1135498, 1202292, 1459926, 1572228, 1703247, 2270996, 2919852, 3406494, 5109741, 6812988, 10219482, 20438964]

約数ペア:

[(1, 20438964), (2, 10219482), (3, 6812988), (4, 5109741), (6, 3406494), (7, 2919852), (9, 2270996), (12, 1703247), (13, 1572228), (14, 1459926), (17, 1202292), (18, 1135498), (21, 973284), (26, 786114), (28, 729963), (34, 601146), (36, 567749), (39, 524076), (42, 486642), (51, 400764), (52, 393057), (63, 324428), (68, 300573), (78, 262038), (84, 243321), (91, 224604), (102, 200382), (117, 174692), (119, 171756), (126, 162214), (153, 133588), (156, 131019), (182, 112302), (204, 100191), (221, 92484), (234, 87346), (238, 85878), (252, 81107), (273, 74868), (306, 66794), (357, 57252), (364, 56151), (367, 55692), (442, 46242), (468, 43673), (476, 42939), (546, 37434), (612, 33397), (663, 30828), (714, 28626), (734, 27846), (819, 24956), (884, 23121), (1071, 19084), (1092, 18717), (1101, 18564), (1326, 15414), (1428, 14313), (1468, 13923), (1547, 13212), (1638, 12478), (1989, 10276), (2142, 9542), (2202, 9282), (2569, 7956), (2652, 7707), (3094, 6606), (3276, 6239), (3303, 6188), (3978, 5138), (4284, 4771), (4404, 4641)]