256852640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{7681}}^1$

素因数の和:7726

約数の個数: 96

約数和(自身を含む): 696911040

約数和(自身を除く): 440058400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 32, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 160, 176, 190, 209, 220, 304, 352, 380, 418, 440, 608, 760, 836, 880, 1045, 1520, 1672, 1760, 2090, 3040, 3344, 4180, 6688, 7681, 8360, 15362, 16720, 30724, 33440, 38405, 61448, 76810, 84491, 122896, 145939, 153620, 168982, 245792, 291878, 307240, 337964, 422455, 583756, 614480, 675928, 729695, 844910, 1167512, 1228960, 1351856, 1459390, 1605329, 1689820, 2335024, 2703712, 2918780, 3210658, 3379640, 4670048, 5837560, 6421316, 6759280, 8026645, 11675120, 12842632, 13518560, 16053290, 23350240, 25685264, 32106580, 51370528, 64213160, 128426320, 256852640]

約数ペア:

[(1, 256852640), (2, 128426320), (4, 64213160), (5, 51370528), (8, 32106580), (10, 25685264), (11, 23350240), (16, 16053290), (19, 13518560), (20, 12842632), (22, 11675120), (32, 8026645), (38, 6759280), (40, 6421316), (44, 5837560), (55, 4670048), (76, 3379640), (80, 3210658), (88, 2918780), (95, 2703712), (110, 2335024), (152, 1689820), (160, 1605329), (176, 1459390), (190, 1351856), (209, 1228960), (220, 1167512), (304, 844910), (352, 729695), (380, 675928), (418, 614480), (440, 583756), (608, 422455), (760, 337964), (836, 307240), (880, 291878), (1045, 245792), (1520, 168982), (1672, 153620), (1760, 145939), (2090, 122896), (3040, 84491), (3344, 76810), (4180, 61448), (6688, 38405), (7681, 33440), (8360, 30724), (15362, 16720)]