81238920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5689}}^1$

素因数の和:5727

約数の個数: 128

約数和(自身を含む): 294969600

約数和(自身を除く): 213730680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 51, 56, 60, 68, 70, 84, 85, 102, 105, 119, 120, 136, 140, 168, 170, 204, 210, 238, 255, 280, 340, 357, 408, 420, 476, 510, 595, 680, 714, 840, 952, 1020, 1190, 1428, 1785, 2040, 2380, 2856, 3570, 4760, 5689, 7140, 11378, 14280, 17067, 22756, 28445, 34134, 39823, 45512, 56890, 68268, 79646, 85335, 96713, 113780, 119469, 136536, 159292, 170670, 193426, 199115, 227560, 238938, 290139, 318584, 341340, 386852, 398230, 477876, 483565, 580278, 597345, 676991, 682680, 773704, 796460, 955752, 967130, 1160556, 1194690, 1353982, 1450695, 1592920, 1934260, 2030973, 2321112, 2389380, 2707964, 2901390, 3384955, 3868520, 4061946, 4778760, 5415928, 5802780, 6769910, 8123892, 10154865, 11605560, 13539820, 16247784, 20309730, 27079640, 40619460, 81238920]

約数ペア:

[(1, 81238920), (2, 40619460), (3, 27079640), (4, 20309730), (5, 16247784), (6, 13539820), (7, 11605560), (8, 10154865), (10, 8123892), (12, 6769910), (14, 5802780), (15, 5415928), (17, 4778760), (20, 4061946), (21, 3868520), (24, 3384955), (28, 2901390), (30, 2707964), (34, 2389380), (35, 2321112), (40, 2030973), (42, 1934260), (51, 1592920), (56, 1450695), (60, 1353982), (68, 1194690), (70, 1160556), (84, 967130), (85, 955752), (102, 796460), (105, 773704), (119, 682680), (120, 676991), (136, 597345), (140, 580278), (168, 483565), (170, 477876), (204, 398230), (210, 386852), (238, 341340), (255, 318584), (280, 290139), (340, 238938), (357, 227560), (408, 199115), (420, 193426), (476, 170670), (510, 159292), (595, 136536), (680, 119469), (714, 113780), (840, 96713), (952, 85335), (1020, 79646), (1190, 68268), (1428, 56890), (1785, 45512), (2040, 39823), (2380, 34134), (2856, 28445), (3570, 22756), (4760, 17067), (5689, 14280), (7140, 11378)]