648438420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{6151}}^1$

素因数の和:6421

約数の個数: 96

約数和(自身を含む): 2083608576

約数和(自身を除く): 1435170156

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 251, 420, 502, 753, 1004, 1255, 1506, 1757, 2510, 3012, 3514, 3765, 5020, 5271, 6151, 7028, 7530, 8785, 10542, 12302, 15060, 17570, 18453, 21084, 24604, 26355, 30755, 35140, 36906, 43057, 52710, 61510, 73812, 86114, 92265, 105420, 123020, 129171, 172228, 184530, 215285, 258342, 369060, 430570, 516684, 645855, 861140, 1291710, 1543901, 2583420, 3087802, 4631703, 6175604, 7719505, 9263406, 10807307, 15439010, 18526812, 21614614, 23158515, 30878020, 32421921, 43229228, 46317030, 54036535, 64843842, 92634060, 108073070, 129687684, 162109605, 216146140, 324219210, 648438420]

約数ペア:

[(1, 648438420), (2, 324219210), (3, 216146140), (4, 162109605), (5, 129687684), (6, 108073070), (7, 92634060), (10, 64843842), (12, 54036535), (14, 46317030), (15, 43229228), (20, 32421921), (21, 30878020), (28, 23158515), (30, 21614614), (35, 18526812), (42, 15439010), (60, 10807307), (70, 9263406), (84, 7719505), (105, 6175604), (140, 4631703), (210, 3087802), (251, 2583420), (420, 1543901), (502, 1291710), (753, 861140), (1004, 645855), (1255, 516684), (1506, 430570), (1757, 369060), (2510, 258342), (3012, 215285), (3514, 184530), (3765, 172228), (5020, 129171), (5271, 123020), (6151, 105420), (7028, 92265), (7530, 86114), (8785, 73812), (10542, 61510), (12302, 52710), (15060, 43057), (17570, 36906), (18453, 35140), (21084, 30755), (24604, 26355)]