21203325

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{659}}^1$

素因数の和:699

約数の個数: 72

約数和(自身を含む): 44684640

約数和(自身を除く): 23481315

約数列:

[1, 3, 5, 9, 11, 13, 15, 25, 33, 39, 45, 55, 65, 75, 99, 117, 143, 165, 195, 225, 275, 325, 429, 495, 585, 659, 715, 825, 975, 1287, 1977, 2145, 2475, 2925, 3295, 3575, 5931, 6435, 7249, 8567, 9885, 10725, 16475, 21747, 25701, 29655, 32175, 36245, 42835, 49425, 65241, 77103, 94237, 108735, 128505, 148275, 181225, 214175, 282711, 326205, 385515, 471185, 543675, 642525, 848133, 1413555, 1631025, 1927575, 2355925, 4240665, 7067775, 21203325]

約数ペア:

[(1, 21203325), (3, 7067775), (5, 4240665), (9, 2355925), (11, 1927575), (13, 1631025), (15, 1413555), (25, 848133), (33, 642525), (39, 543675), (45, 471185), (55, 385515), (65, 326205), (75, 282711), (99, 214175), (117, 181225), (143, 148275), (165, 128505), (195, 108735), (225, 94237), (275, 77103), (325, 65241), (429, 49425), (495, 42835), (585, 36245), (659, 32175), (715, 29655), (825, 25701), (975, 21747), (1287, 16475), (1977, 10725), (2145, 9885), (2475, 8567), (2925, 7249), (3295, 6435), (3575, 5931)]