21356454

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4273}}^1$

素因数の和:4309

約数の個数: 48

約数和(自身を含む): 52621488

約数和(自身を除く): 31265034

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 34, 42, 49, 51, 98, 102, 119, 147, 238, 294, 357, 714, 833, 1666, 2499, 4273, 4998, 8546, 12819, 25638, 29911, 59822, 72641, 89733, 145282, 179466, 209377, 217923, 418754, 435846, 508487, 628131, 1016974, 1256262, 1525461, 3050922, 3559409, 7118818, 10678227, 21356454]

約数ペア:

[(1, 21356454), (2, 10678227), (3, 7118818), (6, 3559409), (7, 3050922), (14, 1525461), (17, 1256262), (21, 1016974), (34, 628131), (42, 508487), (49, 435846), (51, 418754), (98, 217923), (102, 209377), (119, 179466), (147, 145282), (238, 89733), (294, 72641), (357, 59822), (714, 29911), (833, 25638), (1666, 12819), (2499, 8546), (4273, 4998)]