21147516

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{619}}^1$

素因数の和:715

約数の個数: 72

約数和(自身を含む): 58451120

約数和(自身を除く): 37303604

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 73, 78, 117, 146, 156, 219, 234, 292, 438, 468, 619, 657, 876, 949, 1238, 1314, 1857, 1898, 2476, 2628, 2847, 3714, 3796, 5571, 5694, 7428, 8047, 8541, 11142, 11388, 16094, 17082, 22284, 24141, 32188, 34164, 45187, 48282, 72423, 90374, 96564, 135561, 144846, 180748, 271122, 289692, 406683, 542244, 587431, 813366, 1174862, 1626732, 1762293, 2349724, 3524586, 5286879, 7049172, 10573758, 21147516]

約数ペア:

[(1, 21147516), (2, 10573758), (3, 7049172), (4, 5286879), (6, 3524586), (9, 2349724), (12, 1762293), (13, 1626732), (18, 1174862), (26, 813366), (36, 587431), (39, 542244), (52, 406683), (73, 289692), (78, 271122), (117, 180748), (146, 144846), (156, 135561), (219, 96564), (234, 90374), (292, 72423), (438, 48282), (468, 45187), (619, 34164), (657, 32188), (876, 24141), (949, 22284), (1238, 17082), (1314, 16094), (1857, 11388), (1898, 11142), (2476, 8541), (2628, 8047), (2847, 7428), (3714, 5694), (3796, 5571)]