257834240

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^3\times {\mathrm{41}}^1$

素因数の和:113

約数の個数: 144

約数和(自身を含む): 672189840

約数和(自身を除く): 414355600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 41, 64, 68, 80, 82, 85, 128, 136, 160, 164, 170, 205, 256, 272, 289, 320, 328, 340, 410, 544, 578, 640, 656, 680, 697, 820, 1088, 1156, 1280, 1312, 1360, 1394, 1445, 1640, 2176, 2312, 2624, 2720, 2788, 2890, 3280, 3485, 4352, 4624, 4913, 5248, 5440, 5576, 5780, 6560, 6970, 9248, 9826, 10496, 10880, 11152, 11560, 11849, 13120, 13940, 18496, 19652, 21760, 22304, 23120, 23698, 24565, 26240, 27880, 36992, 39304, 44608, 46240, 47396, 49130, 52480, 55760, 59245, 73984, 78608, 89216, 92480, 94792, 98260, 111520, 118490, 157216, 178432, 184960, 189584, 196520, 201433, 223040, 236980, 314432, 369920, 379168, 393040, 402866, 446080, 473960, 628864, 758336, 786080, 805732, 892160, 947920, 1007165, 1257728, 1516672, 1572160, 1611464, 1895840, 2014330, 3033344, 3144320, 3222928, 3791680, 4028660, 6288640, 6445856, 7583360, 8057320, 12891712, 15166720, 16114640, 25783424, 32229280, 51566848, 64458560, 128917120, 257834240]

約数ペア:

[(1, 257834240), (2, 128917120), (4, 64458560), (5, 51566848), (8, 32229280), (10, 25783424), (16, 16114640), (17, 15166720), (20, 12891712), (32, 8057320), (34, 7583360), (40, 6445856), (41, 6288640), (64, 4028660), (68, 3791680), (80, 3222928), (82, 3144320), (85, 3033344), (128, 2014330), (136, 1895840), (160, 1611464), (164, 1572160), (170, 1516672), (205, 1257728), (256, 1007165), (272, 947920), (289, 892160), (320, 805732), (328, 786080), (340, 758336), (410, 628864), (544, 473960), (578, 446080), (640, 402866), (656, 393040), (680, 379168), (697, 369920), (820, 314432), (1088, 236980), (1156, 223040), (1280, 201433), (1312, 196520), (1360, 189584), (1394, 184960), (1445, 178432), (1640, 157216), (2176, 118490), (2312, 111520), (2624, 98260), (2720, 94792), (2788, 92480), (2890, 89216), (3280, 78608), (3485, 73984), (4352, 59245), (4624, 55760), (4913, 52480), (5248, 49130), (5440, 47396), (5576, 46240), (5780, 44608), (6560, 39304), (6970, 36992), (9248, 27880), (9826, 26240), (10496, 24565), (10880, 23698), (11152, 23120), (11560, 22304), (11849, 21760), (13120, 19652), (13940, 18496)]