8400520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^2\times {\mathrm{397}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 19808460

約数和(自身を除く): 11407940

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 397, 460, 529, 794, 920, 1058, 1588, 1985, 2116, 2645, 3176, 3970, 4232, 5290, 7940, 9131, 10580, 15880, 18262, 21160, 36524, 45655, 73048, 91310, 182620, 210013, 365240, 420026, 840052, 1050065, 1680104, 2100130, 4200260, 8400520]

約数ペア:

[(1, 8400520), (2, 4200260), (4, 2100130), (5, 1680104), (8, 1050065), (10, 840052), (20, 420026), (23, 365240), (40, 210013), (46, 182620), (92, 91310), (115, 73048), (184, 45655), (230, 36524), (397, 21160), (460, 18262), (529, 15880), (794, 10580), (920, 9131), (1058, 7940), (1588, 5290), (1985, 4232), (2116, 3970), (2645, 3176)]