81889329.000000000

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{653}}^1$

素因数の和:766

約数の個数: 144

約数和(自身を含む): 559907712

約数和(自身を除く): 382351788

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 83, 84, 91, 117, 126, 156, 166, 182, 234, 249, 252, 273, 332, 364, 468, 498, 546, 581, 653, 747, 819, 996, 1079, 1092, 1162, 1306, 1494, 1638, 1743, 1959, 2158, 2324, 2612, 2988, 3237, 3276, 3486, 3918, 4316, 4571, 5229, 5877, 6474, 6972, 7553, 7836, 8489, 9142, 9711, 10458, 11754, 12948, 13713, 15106, 16978, 18284, 19422, 20916, 22659, 23508, 25467, 27426, 30212, 33956, 38844, 41139, 45318, 50934, 54199, 54852, 59423, 67977, 76401, 82278, 90636, 101868, 108398, 118846, 135954, 152802, 162597, 164556, 178269, 216796, 237692, 271908, 305604, 325194, 356538, 379393, 487791, 534807, 650388, 704587, 713076, 758786, 975582, 1069614, 1138179, 1409174, 1517572, 1951164, 2113761, 2139228, 2276358, 2818348, 3414537, 4227522, 4552716, 4932109, 6341283, 6829074, 8455044, 9864218, 12682566, 13658148, 14796327, 19728436, 25365132, 29592654, 44388981, 59185308, 88777962, 177555924]

約数ペア:

[(1, 177555924), (2, 88777962), (3, 59185308), (4, 44388981), (6, 29592654), (7, 25365132), (9, 19728436), (12, 14796327), (13, 13658148), (14, 12682566), (18, 9864218), (21, 8455044), (26, 6829074), (28, 6341283), (36, 4932109), (39, 4552716), (42, 4227522), (52, 3414537), (63, 2818348), (78, 2276358), (83, 2139228), (84, 2113761), (91, 1951164), (117, 1517572), (126, 1409174), (156, 1138179), (166, 1069614), (182, 975582), (234, 758786), (249, 713076), (252, 704587), (273, 650388), (332, 534807), (364, 487791), (468, 379393), (498, 356538), (546, 325194), (581, 305604), (653, 271908), (747, 237692), (819, 216796), (996, 178269), (1079, 164556), (1092, 162597), (1162, 152802), (1306, 135954), (1494, 118846), (1638, 108398), (1743, 101868), (1959, 90636), (2158, 82278), (2324, 76401), (2612, 67977), (2988, 59423), (3237, 54852), (3276, 54199), (3486, 50934), (3918, 45318), (4316, 41139), (4571, 38844), (5229, 33956), (5877, 30212), (6474, 27426), (6972, 25467), (7553, 23508), (7836, 22659), (8489, 20916), (9142, 19422), (9711, 18284), (10458, 16978), (11754, 15106), (12948, 13713)]