18504880

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:238

約数の個数: 80

約数和(自身を含む): 45800640

約数和(自身を除く): 27295760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 89, 92, 113, 115, 178, 184, 226, 230, 356, 368, 445, 452, 460, 565, 712, 890, 904, 920, 1130, 1424, 1780, 1808, 1840, 2047, 2260, 2599, 3560, 4094, 4520, 5198, 7120, 8188, 9040, 10057, 10235, 10396, 12995, 16376, 20114, 20470, 20792, 25990, 32752, 40228, 40940, 41584, 50285, 51980, 80456, 81880, 100570, 103960, 160912, 163760, 201140, 207920, 231311, 402280, 462622, 804560, 925244, 1156555, 1850488, 2313110, 3700976, 4626220, 9252440, 18504880]

約数ペア:

[(1, 18504880), (2, 9252440), (4, 4626220), (5, 3700976), (8, 2313110), (10, 1850488), (16, 1156555), (20, 925244), (23, 804560), (40, 462622), (46, 402280), (80, 231311), (89, 207920), (92, 201140), (113, 163760), (115, 160912), (178, 103960), (184, 100570), (226, 81880), (230, 80456), (356, 51980), (368, 50285), (445, 41584), (452, 40940), (460, 40228), (565, 32752), (712, 25990), (890, 20792), (904, 20470), (920, 20114), (1130, 16376), (1424, 12995), (1780, 10396), (1808, 10235), (1840, 10057), (2047, 9040), (2260, 8188), (2599, 7120), (3560, 5198), (4094, 4520)]