2780218880

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{661}}^1$

素因数の和:768

約数の個数: 160

約数和(自身を含む): 7021479168

約数和(自身を除く): 4241260288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 53, 62, 64, 80, 106, 124, 128, 155, 160, 212, 248, 256, 265, 310, 320, 424, 496, 512, 530, 620, 640, 661, 848, 992, 1060, 1240, 1280, 1322, 1643, 1696, 1984, 2120, 2480, 2560, 2644, 3286, 3305, 3392, 3968, 4240, 4960, 5288, 6572, 6610, 6784, 7936, 8215, 8480, 9920, 10576, 13144, 13220, 13568, 15872, 16430, 16960, 19840, 20491, 21152, 26288, 26440, 27136, 32860, 33920, 35033, 39680, 40982, 42304, 52576, 52880, 65720, 67840, 70066, 79360, 81964, 84608, 102455, 105152, 105760, 131440, 135680, 140132, 163928, 169216, 175165, 204910, 210304, 211520, 262880, 280264, 327856, 338432, 350330, 409820, 420608, 423040, 525760, 560528, 655712, 700660, 819640, 841216, 846080, 1051520, 1086023, 1121056, 1311424, 1401320, 1639280, 1692160, 2103040, 2172046, 2242112, 2622848, 2802640, 3278560, 4206080, 4344092, 4484224, 5245696, 5430115, 5605280, 6557120, 8688184, 8968448, 10491392, 10860230, 11210560, 13114240, 17376368, 17936896, 21720460, 22421120, 26228480, 34752736, 43440920, 44842240, 52456960, 69505472, 86881840, 89684480, 139010944, 173763680, 278021888, 347527360, 556043776, 695054720, 1390109440, 2780218880]

約数ペア:

[(1, 2780218880), (2, 1390109440), (4, 695054720), (5, 556043776), (8, 347527360), (10, 278021888), (16, 173763680), (20, 139010944), (31, 89684480), (32, 86881840), (40, 69505472), (53, 52456960), (62, 44842240), (64, 43440920), (80, 34752736), (106, 26228480), (124, 22421120), (128, 21720460), (155, 17936896), (160, 17376368), (212, 13114240), (248, 11210560), (256, 10860230), (265, 10491392), (310, 8968448), (320, 8688184), (424, 6557120), (496, 5605280), (512, 5430115), (530, 5245696), (620, 4484224), (640, 4344092), (661, 4206080), (848, 3278560), (992, 2802640), (1060, 2622848), (1240, 2242112), (1280, 2172046), (1322, 2103040), (1643, 1692160), (1696, 1639280), (1984, 1401320), (2120, 1311424), (2480, 1121056), (2560, 1086023), (2644, 1051520), (3286, 846080), (3305, 841216), (3392, 819640), (3968, 700660), (4240, 655712), (4960, 560528), (5288, 525760), (6572, 423040), (6610, 420608), (6784, 409820), (7936, 350330), (8215, 338432), (8480, 327856), (9920, 280264), (10576, 262880), (13144, 211520), (13220, 210304), (13568, 204910), (15872, 175165), (16430, 169216), (16960, 163928), (19840, 140132), (20491, 135680), (21152, 131440), (26288, 105760), (26440, 105152), (27136, 102455), (32860, 84608), (33920, 81964), (35033, 79360), (39680, 70066), (40982, 67840), (42304, 65720), (52576, 52880)]