251931288

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21121}}^1$

素因数の和:21208

約数の個数: 64

約数和(自身を含む): 729976320

約数和(自身を除く): 478045032

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 71, 84, 142, 168, 213, 284, 426, 497, 568, 852, 994, 1491, 1704, 1988, 2982, 3976, 5964, 11928, 21121, 42242, 63363, 84484, 126726, 147847, 168968, 253452, 295694, 443541, 506904, 591388, 887082, 1182776, 1499591, 1774164, 2999182, 3548328, 4498773, 5998364, 8997546, 10497137, 11996728, 17995092, 20994274, 31491411, 35990184, 41988548, 62982822, 83977096, 125965644, 251931288]

約数ペア:

[(1, 251931288), (2, 125965644), (3, 83977096), (4, 62982822), (6, 41988548), (7, 35990184), (8, 31491411), (12, 20994274), (14, 17995092), (21, 11996728), (24, 10497137), (28, 8997546), (42, 5998364), (56, 4498773), (71, 3548328), (84, 2999182), (142, 1774164), (168, 1499591), (213, 1182776), (284, 887082), (426, 591388), (497, 506904), (568, 443541), (852, 295694), (994, 253452), (1491, 168968), (1704, 147847), (1988, 126726), (2982, 84484), (3976, 63363), (5964, 42242), (11928, 21121)]