128308520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{9931}}^1$

素因数の和:9978

約数の個数: 64

約数和(自身を含む): 321796800

約数和(自身を除く): 193488280

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1615, 2584, 3230, 6460, 9931, 12920, 19862, 39724, 49655, 79448, 99310, 168827, 188689, 198620, 337654, 377378, 397240, 675308, 754756, 844135, 943445, 1350616, 1509512, 1688270, 1886890, 3207713, 3376540, 3773780, 6415426, 6753080, 7547560, 12830852, 16038565, 25661704, 32077130, 64154260, 128308520]

約数ペア:

[(1, 128308520), (2, 64154260), (4, 32077130), (5, 25661704), (8, 16038565), (10, 12830852), (17, 7547560), (19, 6753080), (20, 6415426), (34, 3773780), (38, 3376540), (40, 3207713), (68, 1886890), (76, 1688270), (85, 1509512), (95, 1350616), (136, 943445), (152, 844135), (170, 754756), (190, 675308), (323, 397240), (340, 377378), (380, 337654), (646, 198620), (680, 188689), (760, 168827), (1292, 99310), (1615, 79448), (2584, 49655), (3230, 39724), (6460, 19862), (9931, 12920)]