20990820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18413}}^1$

素因数の和:18444

約数の個数: 48

約数和(自身を含む): 61871040

約数和(自身を除く): 40880220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 18413, 36826, 55239, 73652, 92065, 110478, 184130, 220956, 276195, 349847, 368260, 552390, 699694, 1049541, 1104780, 1399388, 1749235, 2099082, 3498470, 4198164, 5247705, 6996940, 10495410, 20990820]

約数ペア:

[(1, 20990820), (2, 10495410), (3, 6996940), (4, 5247705), (5, 4198164), (6, 3498470), (10, 2099082), (12, 1749235), (15, 1399388), (19, 1104780), (20, 1049541), (30, 699694), (38, 552390), (57, 368260), (60, 349847), (76, 276195), (95, 220956), (114, 184130), (190, 110478), (228, 92065), (285, 73652), (380, 55239), (570, 36826), (1140, 18413)]