21413440

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1097}}^1$

素因数の和:1175

約数の個数: 56

約数和(自身を含む): 51873912

約数和(自身を除く): 30460472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 244, 305, 320, 488, 610, 976, 1097, 1220, 1952, 2194, 2440, 3904, 4388, 4880, 5485, 8776, 9760, 10970, 17552, 19520, 21940, 35104, 43880, 66917, 70208, 87760, 133834, 175520, 267668, 334585, 351040, 535336, 669170, 1070672, 1338340, 2141344, 2676680, 4282688, 5353360, 10706720, 21413440]

約数ペア:

[(1, 21413440), (2, 10706720), (4, 5353360), (5, 4282688), (8, 2676680), (10, 2141344), (16, 1338340), (20, 1070672), (32, 669170), (40, 535336), (61, 351040), (64, 334585), (80, 267668), (122, 175520), (160, 133834), (244, 87760), (305, 70208), (320, 66917), (488, 43880), (610, 35104), (976, 21940), (1097, 19520), (1220, 17552), (1952, 10970), (2194, 9760), (2440, 8776), (3904, 5485), (4388, 4880)]