20478472

素因数分解:

$2^3\times 7^3\times {\mathrm{17}}^1\times {\mathrm{439}}^1$

素因数の和:483

約数の個数: 64

約数和(自身を含む): 47520000

約数和(自身を除く): 27041528

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 49, 56, 68, 98, 119, 136, 196, 238, 343, 392, 439, 476, 686, 833, 878, 952, 1372, 1666, 1756, 2744, 3073, 3332, 3512, 5831, 6146, 6664, 7463, 11662, 12292, 14926, 21511, 23324, 24584, 29852, 43022, 46648, 52241, 59704, 86044, 104482, 150577, 172088, 208964, 301154, 365687, 417928, 602308, 731374, 1204616, 1462748, 2559809, 2925496, 5119618, 10239236, 20478472]

約数ペア:

[(1, 20478472), (2, 10239236), (4, 5119618), (7, 2925496), (8, 2559809), (14, 1462748), (17, 1204616), (28, 731374), (34, 602308), (49, 417928), (56, 365687), (68, 301154), (98, 208964), (119, 172088), (136, 150577), (196, 104482), (238, 86044), (343, 59704), (392, 52241), (439, 46648), (476, 43022), (686, 29852), (833, 24584), (878, 23324), (952, 21511), (1372, 14926), (1666, 12292), (1756, 11662), (2744, 7463), (3073, 6664), (3332, 6146), (3512, 5831)]