131555920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1\times {\mathrm{229}}^1$

素因数の和:452

約数の個数: 80

約数和(自身を含む): 316229760

約数和(自身を除く): 184673840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 167, 172, 215, 229, 334, 344, 430, 458, 668, 688, 835, 860, 916, 1145, 1336, 1670, 1720, 1832, 2290, 2672, 3340, 3440, 3664, 4580, 6680, 7181, 9160, 9847, 13360, 14362, 18320, 19694, 28724, 35905, 38243, 39388, 49235, 57448, 71810, 76486, 78776, 98470, 114896, 143620, 152972, 157552, 191215, 196940, 287240, 305944, 382430, 393880, 574480, 611888, 764860, 787760, 1529720, 1644449, 3059440, 3288898, 6577796, 8222245, 13155592, 16444490, 26311184, 32888980, 65777960, 131555920]

約数ペア:

[(1, 131555920), (2, 65777960), (4, 32888980), (5, 26311184), (8, 16444490), (10, 13155592), (16, 8222245), (20, 6577796), (40, 3288898), (43, 3059440), (80, 1644449), (86, 1529720), (167, 787760), (172, 764860), (215, 611888), (229, 574480), (334, 393880), (344, 382430), (430, 305944), (458, 287240), (668, 196940), (688, 191215), (835, 157552), (860, 152972), (916, 143620), (1145, 114896), (1336, 98470), (1670, 78776), (1720, 76486), (1832, 71810), (2290, 57448), (2672, 49235), (3340, 39388), (3440, 38243), (3664, 35905), (4580, 28724), (6680, 19694), (7181, 18320), (9160, 14362), (9847, 13360)]