21664728

素因数分解:

$2^3\times 3^2\times {\mathrm{41}}^2\times {\mathrm{179}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 60477300

約数和(自身を除く): 38812572

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 41, 72, 82, 123, 164, 179, 246, 328, 358, 369, 492, 537, 716, 738, 984, 1074, 1432, 1476, 1611, 1681, 2148, 2952, 3222, 3362, 4296, 5043, 6444, 6724, 7339, 10086, 12888, 13448, 14678, 15129, 20172, 22017, 29356, 30258, 40344, 44034, 58712, 60516, 66051, 88068, 121032, 132102, 176136, 264204, 300899, 528408, 601798, 902697, 1203596, 1805394, 2407192, 2708091, 3610788, 5416182, 7221576, 10832364, 21664728]

約数ペア:

[(1, 21664728), (2, 10832364), (3, 7221576), (4, 5416182), (6, 3610788), (8, 2708091), (9, 2407192), (12, 1805394), (18, 1203596), (24, 902697), (36, 601798), (41, 528408), (72, 300899), (82, 264204), (123, 176136), (164, 132102), (179, 121032), (246, 88068), (328, 66051), (358, 60516), (369, 58712), (492, 44034), (537, 40344), (716, 30258), (738, 29356), (984, 22017), (1074, 20172), (1432, 15129), (1476, 14678), (1611, 13448), (1681, 12888), (2148, 10086), (2952, 7339), (3222, 6724), (3362, 6444), (4296, 5043)]