81191745

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{503}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 150014592

約数和(自身を除く): 68822847

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 211, 255, 503, 633, 765, 1055, 1509, 1899, 2515, 3165, 3587, 4527, 7545, 8551, 9495, 10761, 17935, 22635, 25653, 32283, 42755, 53805, 76959, 106133, 128265, 161415, 318399, 384795, 530665, 955197, 1591995, 1804261, 4775985, 5412783, 9021305, 16238349, 27063915, 81191745]

約数ペア:

[(1, 81191745), (3, 27063915), (5, 16238349), (9, 9021305), (15, 5412783), (17, 4775985), (45, 1804261), (51, 1591995), (85, 955197), (153, 530665), (211, 384795), (255, 318399), (503, 161415), (633, 128265), (765, 106133), (1055, 76959), (1509, 53805), (1899, 42755), (2515, 32283), (3165, 25653), (3587, 22635), (4527, 17935), (7545, 10761), (8551, 9495)]