256979100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1549}}^1$

素因数の和:1652

約数の個数: 144

約数和(自身を含む): 861056000

約数和(自身を除く): 604076900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 79, 84, 100, 105, 140, 150, 158, 175, 210, 237, 300, 316, 350, 395, 420, 474, 525, 553, 700, 790, 948, 1050, 1106, 1185, 1549, 1580, 1659, 1975, 2100, 2212, 2370, 2765, 3098, 3318, 3950, 4647, 4740, 5530, 5925, 6196, 6636, 7745, 7900, 8295, 9294, 10843, 11060, 11850, 13825, 15490, 16590, 18588, 21686, 23235, 23700, 27650, 30980, 32529, 33180, 38725, 41475, 43372, 46470, 54215, 55300, 65058, 77450, 82950, 92940, 108430, 116175, 122371, 130116, 154900, 162645, 165900, 216860, 232350, 244742, 271075, 325290, 367113, 464700, 489484, 542150, 611855, 650580, 734226, 813225, 856597, 1084300, 1223710, 1468452, 1626450, 1713194, 1835565, 2447420, 2569791, 3059275, 3252900, 3426388, 3671130, 4282985, 5139582, 6118550, 7342260, 8565970, 9177825, 10279164, 12237100, 12848955, 17131940, 18355650, 21414925, 25697910, 36711300, 42829850, 51395820, 64244775, 85659700, 128489550, 256979100]

約数ペア:

[(1, 256979100), (2, 128489550), (3, 85659700), (4, 64244775), (5, 51395820), (6, 42829850), (7, 36711300), (10, 25697910), (12, 21414925), (14, 18355650), (15, 17131940), (20, 12848955), (21, 12237100), (25, 10279164), (28, 9177825), (30, 8565970), (35, 7342260), (42, 6118550), (50, 5139582), (60, 4282985), (70, 3671130), (75, 3426388), (79, 3252900), (84, 3059275), (100, 2569791), (105, 2447420), (140, 1835565), (150, 1713194), (158, 1626450), (175, 1468452), (210, 1223710), (237, 1084300), (300, 856597), (316, 813225), (350, 734226), (395, 650580), (420, 611855), (474, 542150), (525, 489484), (553, 464700), (700, 367113), (790, 325290), (948, 271075), (1050, 244742), (1106, 232350), (1185, 216860), (1549, 165900), (1580, 162645), (1659, 154900), (1975, 130116), (2100, 122371), (2212, 116175), (2370, 108430), (2765, 92940), (3098, 82950), (3318, 77450), (3950, 65058), (4647, 55300), (4740, 54215), (5530, 46470), (5925, 43372), (6196, 41475), (6636, 38725), (7745, 33180), (7900, 32529), (8295, 30980), (9294, 27650), (10843, 23700), (11060, 23235), (11850, 21686), (13825, 18588), (15490, 16590)]