211875885

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:260

約数の個数: 128

約数和(自身を含む): 440294400

約数和(自身を除く): 228418515

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 29, 39, 45, 65, 69, 87, 115, 117, 135, 145, 181, 195, 207, 261, 299, 345, 351, 377, 435, 543, 585, 621, 667, 783, 897, 905, 1035, 1131, 1305, 1495, 1629, 1755, 1885, 2001, 2353, 2691, 2715, 3105, 3335, 3393, 3915, 4163, 4485, 4887, 5249, 5655, 6003, 7059, 8073, 8145, 8671, 10005, 10179, 11765, 12489, 13455, 15747, 16965, 18009, 20815, 21177, 24435, 26013, 26245, 30015, 35295, 37467, 40365, 43355, 47241, 50895, 54119, 62445, 63531, 68237, 78039, 78735, 90045, 105885, 112401, 120727, 130065, 141723, 162357, 187335, 204711, 234117, 236205, 270595, 317655, 341185, 362181, 390195, 487071, 562005, 603635, 614133, 708615, 811785, 1023555, 1086543, 1170585, 1461213, 1569451, 1810905, 1842399, 2435355, 3070665, 3259629, 4708353, 5432715, 7306065, 7847255, 9211995, 14125059, 16298145, 23541765, 42375177, 70625295, 211875885]

約数ペア:

[(1, 211875885), (3, 70625295), (5, 42375177), (9, 23541765), (13, 16298145), (15, 14125059), (23, 9211995), (27, 7847255), (29, 7306065), (39, 5432715), (45, 4708353), (65, 3259629), (69, 3070665), (87, 2435355), (115, 1842399), (117, 1810905), (135, 1569451), (145, 1461213), (181, 1170585), (195, 1086543), (207, 1023555), (261, 811785), (299, 708615), (345, 614133), (351, 603635), (377, 562005), (435, 487071), (543, 390195), (585, 362181), (621, 341185), (667, 317655), (783, 270595), (897, 236205), (905, 234117), (1035, 204711), (1131, 187335), (1305, 162357), (1495, 141723), (1629, 130065), (1755, 120727), (1885, 112401), (2001, 105885), (2353, 90045), (2691, 78735), (2715, 78039), (3105, 68237), (3335, 63531), (3393, 62445), (3915, 54119), (4163, 50895), (4485, 47241), (4887, 43355), (5249, 40365), (5655, 37467), (6003, 35295), (7059, 30015), (8073, 26245), (8145, 26013), (8671, 24435), (10005, 21177), (10179, 20815), (11765, 18009), (12489, 16965), (13455, 15747)]