21731860

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 47496960

約数和(自身を除く): 25765100

約数列:

[1, 2, 4, 5, 10, 20, 47, 61, 94, 122, 188, 235, 244, 305, 379, 470, 610, 758, 940, 1220, 1516, 1895, 2867, 3790, 5734, 7580, 11468, 14335, 17813, 23119, 28670, 35626, 46238, 57340, 71252, 89065, 92476, 115595, 178130, 231190, 356260, 462380, 1086593, 2173186, 4346372, 5432965, 10865930, 21731860]

約数ペア:

[(1, 21731860), (2, 10865930), (4, 5432965), (5, 4346372), (10, 2173186), (20, 1086593), (47, 462380), (61, 356260), (94, 231190), (122, 178130), (188, 115595), (235, 92476), (244, 89065), (305, 71252), (379, 57340), (470, 46238), (610, 35626), (758, 28670), (940, 23119), (1220, 17813), (1516, 14335), (1895, 11468), (2867, 7580), (3790, 5734)]