256988400

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{331}}^1\times {\mathrm{647}}^1$

素因数の和:999

約数の個数: 120

約数和(自身を含む): 826982784

約数和(自身を除く): 569994384

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 150, 200, 240, 300, 331, 400, 600, 647, 662, 993, 1200, 1294, 1324, 1655, 1941, 1986, 2588, 2648, 3235, 3310, 3882, 3972, 4965, 5176, 5296, 6470, 6620, 7764, 7944, 8275, 9705, 9930, 10352, 12940, 13240, 15528, 15888, 16175, 16550, 19410, 19860, 24825, 25880, 26480, 31056, 32350, 33100, 38820, 39720, 48525, 49650, 51760, 64700, 66200, 77640, 79440, 97050, 99300, 129400, 132400, 155280, 194100, 198600, 214157, 258800, 388200, 397200, 428314, 642471, 776400, 856628, 1070785, 1284942, 1713256, 2141570, 2569884, 3212355, 3426512, 4283140, 5139768, 5353925, 6424710, 8566280, 10279536, 10707850, 12849420, 16061775, 17132560, 21415700, 25698840, 32123550, 42831400, 51397680, 64247100, 85662800, 128494200, 256988400]

約数ペア:

[(1, 256988400), (2, 128494200), (3, 85662800), (4, 64247100), (5, 51397680), (6, 42831400), (8, 32123550), (10, 25698840), (12, 21415700), (15, 17132560), (16, 16061775), (20, 12849420), (24, 10707850), (25, 10279536), (30, 8566280), (40, 6424710), (48, 5353925), (50, 5139768), (60, 4283140), (75, 3426512), (80, 3212355), (100, 2569884), (120, 2141570), (150, 1713256), (200, 1284942), (240, 1070785), (300, 856628), (331, 776400), (400, 642471), (600, 428314), (647, 397200), (662, 388200), (993, 258800), (1200, 214157), (1294, 198600), (1324, 194100), (1655, 155280), (1941, 132400), (1986, 129400), (2588, 99300), (2648, 97050), (3235, 79440), (3310, 77640), (3882, 66200), (3972, 64700), (4965, 51760), (5176, 49650), (5296, 48525), (6470, 39720), (6620, 38820), (7764, 33100), (7944, 32350), (8275, 31056), (9705, 26480), (9930, 25880), (10352, 24825), (12940, 19860), (13240, 19410), (15528, 16550), (15888, 16175)]