19978056

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:276

約数の個数: 128

約数和(自身を含む): 64646400

約数和(自身を除く): 44668344

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 73, 84, 108, 126, 146, 168, 181, 189, 216, 219, 252, 292, 362, 378, 438, 504, 511, 543, 584, 657, 724, 756, 876, 1022, 1086, 1267, 1314, 1448, 1512, 1533, 1629, 1752, 1971, 2044, 2172, 2534, 2628, 3066, 3258, 3801, 3942, 4088, 4344, 4599, 4887, 5068, 5256, 6132, 6516, 7602, 7884, 9198, 9774, 10136, 11403, 12264, 13032, 13213, 13797, 15204, 15768, 18396, 19548, 22806, 26426, 27594, 30408, 34209, 36792, 39096, 39639, 45612, 52852, 55188, 68418, 79278, 91224, 92491, 105704, 110376, 118917, 136836, 158556, 184982, 237834, 273672, 277473, 317112, 356751, 369964, 475668, 554946, 713502, 739928, 832419, 951336, 1109892, 1427004, 1664838, 2219784, 2497257, 2854008, 3329676, 4994514, 6659352, 9989028, 19978056]

約数ペア:

[(1, 19978056), (2, 9989028), (3, 6659352), (4, 4994514), (6, 3329676), (7, 2854008), (8, 2497257), (9, 2219784), (12, 1664838), (14, 1427004), (18, 1109892), (21, 951336), (24, 832419), (27, 739928), (28, 713502), (36, 554946), (42, 475668), (54, 369964), (56, 356751), (63, 317112), (72, 277473), (73, 273672), (84, 237834), (108, 184982), (126, 158556), (146, 136836), (168, 118917), (181, 110376), (189, 105704), (216, 92491), (219, 91224), (252, 79278), (292, 68418), (362, 55188), (378, 52852), (438, 45612), (504, 39639), (511, 39096), (543, 36792), (584, 34209), (657, 30408), (724, 27594), (756, 26426), (876, 22806), (1022, 19548), (1086, 18396), (1267, 15768), (1314, 15204), (1448, 13797), (1512, 13213), (1533, 13032), (1629, 12264), (1752, 11403), (1971, 10136), (2044, 9774), (2172, 9198), (2534, 7884), (2628, 7602), (3066, 6516), (3258, 6132), (3801, 5256), (3942, 5068), (4088, 4887), (4344, 4599)]