31981080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:349

約数の個数: 128

約数和(自身を含む): 103654080

約数和(自身を除く): 71673000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 61, 68, 85, 102, 120, 122, 136, 170, 183, 204, 244, 255, 257, 305, 340, 366, 408, 488, 510, 514, 610, 680, 732, 771, 915, 1020, 1028, 1037, 1220, 1285, 1464, 1542, 1830, 2040, 2056, 2074, 2440, 2570, 3084, 3111, 3660, 3855, 4148, 4369, 5140, 5185, 6168, 6222, 7320, 7710, 8296, 8738, 10280, 10370, 12444, 13107, 15420, 15555, 15677, 17476, 20740, 21845, 24888, 26214, 30840, 31110, 31354, 34952, 41480, 43690, 47031, 52428, 62220, 62708, 65535, 78385, 87380, 94062, 104856, 124440, 125416, 131070, 156770, 174760, 188124, 235155, 262140, 266509, 313540, 376248, 470310, 524280, 533018, 627080, 799527, 940620, 1066036, 1332545, 1599054, 1881240, 2132072, 2665090, 3198108, 3997635, 5330180, 6396216, 7995270, 10660360, 15990540, 31981080]

約数ペア:

[(1, 31981080), (2, 15990540), (3, 10660360), (4, 7995270), (5, 6396216), (6, 5330180), (8, 3997635), (10, 3198108), (12, 2665090), (15, 2132072), (17, 1881240), (20, 1599054), (24, 1332545), (30, 1066036), (34, 940620), (40, 799527), (51, 627080), (60, 533018), (61, 524280), (68, 470310), (85, 376248), (102, 313540), (120, 266509), (122, 262140), (136, 235155), (170, 188124), (183, 174760), (204, 156770), (244, 131070), (255, 125416), (257, 124440), (305, 104856), (340, 94062), (366, 87380), (408, 78385), (488, 65535), (510, 62708), (514, 62220), (610, 52428), (680, 47031), (732, 43690), (771, 41480), (915, 34952), (1020, 31354), (1028, 31110), (1037, 30840), (1220, 26214), (1285, 24888), (1464, 21845), (1542, 20740), (1830, 17476), (2040, 15677), (2056, 15555), (2074, 15420), (2440, 13107), (2570, 12444), (3084, 10370), (3111, 10280), (3660, 8738), (3855, 8296), (4148, 7710), (4369, 7320), (5140, 6222), (5185, 6168)]