21724220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8167}}^1$

素因数の和:8202

約数の個数: 48

約数和(自身を含む): 54888960

約数和(自身を除く): 33164740

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 8167, 16334, 32668, 40835, 57169, 81670, 114338, 155173, 163340, 228676, 285845, 310346, 571690, 620692, 775865, 1086211, 1143380, 1551730, 2172422, 3103460, 4344844, 5431055, 10862110, 21724220]

約数ペア:

[(1, 21724220), (2, 10862110), (4, 5431055), (5, 4344844), (7, 3103460), (10, 2172422), (14, 1551730), (19, 1143380), (20, 1086211), (28, 775865), (35, 620692), (38, 571690), (70, 310346), (76, 285845), (95, 228676), (133, 163340), (140, 155173), (190, 114338), (266, 81670), (380, 57169), (532, 40835), (665, 32668), (1330, 16334), (2660, 8167)]