208909940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:561

約数の個数: 96

約数和(自身を含む): 496782720

約数和(自身を除く): 287872780

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 73, 76, 85, 95, 146, 170, 190, 292, 323, 340, 365, 380, 443, 646, 730, 886, 1241, 1292, 1387, 1460, 1615, 1772, 2215, 2482, 2774, 3230, 4430, 4964, 5548, 6205, 6460, 6935, 7531, 8417, 8860, 12410, 13870, 15062, 16834, 23579, 24820, 27740, 30124, 32339, 33668, 37655, 42085, 47158, 64678, 75310, 84170, 94316, 117895, 129356, 143089, 150620, 161695, 168340, 235790, 286178, 323390, 471580, 549763, 572356, 614441, 646780, 715445, 1099526, 1228882, 1430890, 2199052, 2457764, 2748815, 2861780, 3072205, 5497630, 6144410, 10445497, 10995260, 12288820, 20890994, 41781988, 52227485, 104454970, 208909940]

約数ペア:

[(1, 208909940), (2, 104454970), (4, 52227485), (5, 41781988), (10, 20890994), (17, 12288820), (19, 10995260), (20, 10445497), (34, 6144410), (38, 5497630), (68, 3072205), (73, 2861780), (76, 2748815), (85, 2457764), (95, 2199052), (146, 1430890), (170, 1228882), (190, 1099526), (292, 715445), (323, 646780), (340, 614441), (365, 572356), (380, 549763), (443, 471580), (646, 323390), (730, 286178), (886, 235790), (1241, 168340), (1292, 161695), (1387, 150620), (1460, 143089), (1615, 129356), (1772, 117895), (2215, 94316), (2482, 84170), (2774, 75310), (3230, 64678), (4430, 47158), (4964, 42085), (5548, 37655), (6205, 33668), (6460, 32339), (6935, 30124), (7531, 27740), (8417, 24820), (8860, 23579), (12410, 16834), (13870, 15062)]