20347040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1$

素因数の和:550

約数の個数: 96

約数和(自身を含む): 56536704

約数和(自身を除く): 36189664

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 160, 185, 224, 259, 280, 296, 370, 491, 518, 560, 592, 740, 982, 1036, 1120, 1184, 1295, 1480, 1964, 2072, 2455, 2590, 2960, 3437, 3928, 4144, 4910, 5180, 5920, 6874, 7856, 8288, 9820, 10360, 13748, 15712, 17185, 18167, 19640, 20720, 27496, 34370, 36334, 39280, 41440, 54992, 68740, 72668, 78560, 90835, 109984, 127169, 137480, 145336, 181670, 254338, 274960, 290672, 363340, 508676, 549920, 581344, 635845, 726680, 1017352, 1271690, 1453360, 2034704, 2543380, 2906720, 4069408, 5086760, 10173520, 20347040]

約数ペア:

[(1, 20347040), (2, 10173520), (4, 5086760), (5, 4069408), (7, 2906720), (8, 2543380), (10, 2034704), (14, 1453360), (16, 1271690), (20, 1017352), (28, 726680), (32, 635845), (35, 581344), (37, 549920), (40, 508676), (56, 363340), (70, 290672), (74, 274960), (80, 254338), (112, 181670), (140, 145336), (148, 137480), (160, 127169), (185, 109984), (224, 90835), (259, 78560), (280, 72668), (296, 68740), (370, 54992), (491, 41440), (518, 39280), (560, 36334), (592, 34370), (740, 27496), (982, 20720), (1036, 19640), (1120, 18167), (1184, 17185), (1295, 15712), (1480, 13748), (1964, 10360), (2072, 9820), (2455, 8288), (2590, 7856), (2960, 6874), (3437, 5920), (3928, 5180), (4144, 4910)]