19809756

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 52276224

約数和(自身を除く): 32466468

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 67, 86, 129, 134, 172, 191, 201, 258, 268, 382, 387, 402, 516, 573, 603, 764, 774, 804, 1146, 1206, 1548, 1719, 2292, 2412, 2881, 3438, 5762, 6876, 8213, 8643, 11524, 12797, 16426, 17286, 24639, 25594, 25929, 32852, 34572, 38391, 49278, 51188, 51858, 73917, 76782, 98556, 103716, 115173, 147834, 153564, 230346, 295668, 460692, 550271, 1100542, 1650813, 2201084, 3301626, 4952439, 6603252, 9904878, 19809756]

約数ペア:

[(1, 19809756), (2, 9904878), (3, 6603252), (4, 4952439), (6, 3301626), (9, 2201084), (12, 1650813), (18, 1100542), (36, 550271), (43, 460692), (67, 295668), (86, 230346), (129, 153564), (134, 147834), (172, 115173), (191, 103716), (201, 98556), (258, 76782), (268, 73917), (382, 51858), (387, 51188), (402, 49278), (516, 38391), (573, 34572), (603, 32852), (764, 25929), (774, 25594), (804, 24639), (1146, 17286), (1206, 16426), (1548, 12797), (1719, 11524), (2292, 8643), (2412, 8213), (2881, 6876), (3438, 5762)]