19806444

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:138

約数の個数: 144

約数和(自身を含む): 61641216

約数和(自身を除く): 41834772

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 41, 42, 54, 63, 71, 81, 82, 84, 108, 123, 126, 142, 162, 164, 189, 213, 243, 246, 252, 284, 287, 324, 369, 378, 426, 486, 492, 497, 567, 574, 639, 738, 756, 852, 861, 972, 994, 1107, 1134, 1148, 1278, 1476, 1491, 1701, 1722, 1917, 1988, 2214, 2268, 2556, 2583, 2911, 2982, 3321, 3402, 3444, 3834, 4428, 4473, 5166, 5751, 5822, 5964, 6642, 6804, 7668, 7749, 8733, 8946, 9963, 10332, 11502, 11644, 13284, 13419, 15498, 17253, 17466, 17892, 19926, 20377, 23004, 23247, 26199, 26838, 30996, 34506, 34932, 39852, 40257, 40754, 46494, 52398, 53676, 61131, 69012, 69741, 78597, 80514, 81508, 92988, 104796, 120771, 122262, 139482, 157194, 161028, 183393, 235791, 241542, 244524, 278964, 314388, 366786, 471582, 483084, 550179, 707373, 733572, 943164, 1100358, 1414746, 1650537, 2200716, 2829492, 3301074, 4951611, 6602148, 9903222, 19806444]

約数ペア:

[(1, 19806444), (2, 9903222), (3, 6602148), (4, 4951611), (6, 3301074), (7, 2829492), (9, 2200716), (12, 1650537), (14, 1414746), (18, 1100358), (21, 943164), (27, 733572), (28, 707373), (36, 550179), (41, 483084), (42, 471582), (54, 366786), (63, 314388), (71, 278964), (81, 244524), (82, 241542), (84, 235791), (108, 183393), (123, 161028), (126, 157194), (142, 139482), (162, 122262), (164, 120771), (189, 104796), (213, 92988), (243, 81508), (246, 80514), (252, 78597), (284, 69741), (287, 69012), (324, 61131), (369, 53676), (378, 52398), (426, 46494), (486, 40754), (492, 40257), (497, 39852), (567, 34932), (574, 34506), (639, 30996), (738, 26838), (756, 26199), (852, 23247), (861, 23004), (972, 20377), (994, 19926), (1107, 17892), (1134, 17466), (1148, 17253), (1278, 15498), (1476, 13419), (1491, 13284), (1701, 11644), (1722, 11502), (1917, 10332), (1988, 9963), (2214, 8946), (2268, 8733), (2556, 7749), (2583, 7668), (2911, 6804), (2982, 6642), (3321, 5964), (3402, 5822), (3444, 5751), (3834, 5166), (4428, 4473)]