19963616

素因数分解:

$2^5\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:291

約数の個数: 48

約数和(自身を含む): 40824000

約数和(自身を除く): 20860384

約数列:

[1, 2, 4, 8, 16, 32, 53, 79, 106, 149, 158, 212, 298, 316, 424, 596, 632, 848, 1192, 1264, 1696, 2384, 2528, 4187, 4768, 7897, 8374, 11771, 15794, 16748, 23542, 31588, 33496, 47084, 63176, 66992, 94168, 126352, 133984, 188336, 252704, 376672, 623863, 1247726, 2495452, 4990904, 9981808, 19963616]

約数ペア:

[(1, 19963616), (2, 9981808), (4, 4990904), (8, 2495452), (16, 1247726), (32, 623863), (53, 376672), (79, 252704), (106, 188336), (149, 133984), (158, 126352), (212, 94168), (298, 66992), (316, 63176), (424, 47084), (596, 33496), (632, 31588), (848, 23542), (1192, 16748), (1264, 15794), (1696, 11771), (2384, 8374), (2528, 7897), (4187, 4768)]