21684796160

素因数分解:

$2^8\times 5^1\times {\mathrm{691}}^1\times {\mathrm{24517}}^1$

素因数の和:25229

約数の個数: 72

約数和(自身を含む): 52019154096

約数和(自身を除く): 30334357936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 691, 1280, 1382, 2764, 3455, 5528, 6910, 11056, 13820, 22112, 24517, 27640, 44224, 49034, 55280, 88448, 98068, 110560, 122585, 176896, 196136, 221120, 245170, 392272, 442240, 490340, 784544, 884480, 980680, 1569088, 1961360, 3138176, 3922720, 6276352, 7845440, 15690880, 16941247, 31381760, 33882494, 67764988, 84706235, 135529976, 169412470, 271059952, 338824940, 542119904, 677649880, 1084239808, 1355299760, 2168479616, 2710599520, 4336959232, 5421199040, 10842398080, 21684796160]

約数ペア:

[(1, 21684796160), (2, 10842398080), (4, 5421199040), (5, 4336959232), (8, 2710599520), (10, 2168479616), (16, 1355299760), (20, 1084239808), (32, 677649880), (40, 542119904), (64, 338824940), (80, 271059952), (128, 169412470), (160, 135529976), (256, 84706235), (320, 67764988), (640, 33882494), (691, 31381760), (1280, 16941247), (1382, 15690880), (2764, 7845440), (3455, 6276352), (5528, 3922720), (6910, 3138176), (11056, 1961360), (13820, 1569088), (22112, 980680), (24517, 884480), (27640, 784544), (44224, 490340), (49034, 442240), (55280, 392272), (88448, 245170), (98068, 221120), (110560, 196136), (122585, 176896)]