199089940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{223}}^1\times {\mathrm{911}}^1$

素因数の和:1157

約数の個数: 72

約数和(自身を含む): 489065472

約数和(自身を除く): 289975532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 223, 245, 446, 490, 892, 911, 980, 1115, 1561, 1822, 2230, 3122, 3644, 4460, 4555, 6244, 6377, 7805, 9110, 10927, 12754, 15610, 18220, 21854, 25508, 31220, 31885, 43708, 44639, 54635, 63770, 89278, 109270, 127540, 178556, 203153, 218540, 223195, 406306, 446390, 812612, 892780, 1015765, 1422071, 2031530, 2844142, 4063060, 5688284, 7110355, 9954497, 14220710, 19908994, 28441420, 39817988, 49772485, 99544970, 199089940]

約数ペア:

[(1, 199089940), (2, 99544970), (4, 49772485), (5, 39817988), (7, 28441420), (10, 19908994), (14, 14220710), (20, 9954497), (28, 7110355), (35, 5688284), (49, 4063060), (70, 2844142), (98, 2031530), (140, 1422071), (196, 1015765), (223, 892780), (245, 812612), (446, 446390), (490, 406306), (892, 223195), (911, 218540), (980, 203153), (1115, 178556), (1561, 127540), (1822, 109270), (2230, 89278), (3122, 63770), (3644, 54635), (4460, 44639), (4555, 43708), (6244, 31885), (6377, 31220), (7805, 25508), (9110, 21854), (10927, 18220), (12754, 15610)]