21121976

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{503}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 41277600

約数和(自身を除く): 20155624

約数列:

[1, 2, 4, 8, 29, 58, 116, 181, 232, 362, 503, 724, 1006, 1448, 2012, 4024, 5249, 10498, 14587, 20996, 29174, 41992, 58348, 91043, 116696, 182086, 364172, 728344, 2640247, 5280494, 10560988, 21121976]

約数ペア:

[(1, 21121976), (2, 10560988), (4, 5280494), (8, 2640247), (29, 728344), (58, 364172), (116, 182086), (181, 116696), (232, 91043), (362, 58348), (503, 41992), (724, 29174), (1006, 20996), (1448, 14587), (2012, 10498), (4024, 5249)]