20456352

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:235

約数の個数: 144

約数和(自身を含む): 67878720

約数和(自身を除く): 47422368

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 56, 63, 72, 73, 84, 96, 112, 126, 139, 144, 146, 168, 219, 224, 252, 278, 288, 292, 336, 417, 438, 504, 511, 556, 584, 657, 672, 834, 876, 973, 1008, 1022, 1112, 1168, 1251, 1314, 1533, 1668, 1752, 1946, 2016, 2044, 2224, 2336, 2502, 2628, 2919, 3066, 3336, 3504, 3892, 4088, 4448, 4599, 5004, 5256, 5838, 6132, 6672, 7008, 7784, 8176, 8757, 9198, 10008, 10147, 10512, 11676, 12264, 13344, 15568, 16352, 17514, 18396, 20016, 20294, 21024, 23352, 24528, 30441, 31136, 35028, 36792, 40032, 40588, 46704, 49056, 60882, 70056, 71029, 73584, 81176, 91323, 93408, 121764, 140112, 142058, 147168, 162352, 182646, 213087, 243528, 280224, 284116, 324704, 365292, 426174, 487056, 568232, 639261, 730584, 852348, 974112, 1136464, 1278522, 1461168, 1704696, 2272928, 2557044, 2922336, 3409392, 5114088, 6818784, 10228176, 20456352]

約数ペア:

[(1, 20456352), (2, 10228176), (3, 6818784), (4, 5114088), (6, 3409392), (7, 2922336), (8, 2557044), (9, 2272928), (12, 1704696), (14, 1461168), (16, 1278522), (18, 1136464), (21, 974112), (24, 852348), (28, 730584), (32, 639261), (36, 568232), (42, 487056), (48, 426174), (56, 365292), (63, 324704), (72, 284116), (73, 280224), (84, 243528), (96, 213087), (112, 182646), (126, 162352), (139, 147168), (144, 142058), (146, 140112), (168, 121764), (219, 93408), (224, 91323), (252, 81176), (278, 73584), (288, 71029), (292, 70056), (336, 60882), (417, 49056), (438, 46704), (504, 40588), (511, 40032), (556, 36792), (584, 35028), (657, 31136), (672, 30441), (834, 24528), (876, 23352), (973, 21024), (1008, 20294), (1022, 20016), (1112, 18396), (1168, 17514), (1251, 16352), (1314, 15568), (1533, 13344), (1668, 12264), (1752, 11676), (1946, 10512), (2016, 10147), (2044, 10008), (2224, 9198), (2336, 8757), (2502, 8176), (2628, 7784), (2919, 7008), (3066, 6672), (3336, 6132), (3504, 5838), (3892, 5256), (4088, 5004), (4448, 4599)]