209827840

素因数分解:

$2^{11}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:719

約数の個数: 96

約数和(自身を含む): 520490880

約数和(自身を除く): 310663040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 661, 992, 1024, 1240, 1280, 1322, 1984, 2048, 2480, 2560, 2644, 3305, 3968, 4960, 5120, 5288, 6610, 7936, 9920, 10240, 10576, 13220, 15872, 19840, 20491, 21152, 26440, 31744, 39680, 40982, 42304, 52880, 63488, 79360, 81964, 84608, 102455, 105760, 158720, 163928, 169216, 204910, 211520, 317440, 327856, 338432, 409820, 423040, 655712, 676864, 819640, 846080, 1311424, 1353728, 1639280, 1692160, 2622848, 3278560, 3384320, 5245696, 6557120, 6768640, 10491392, 13114240, 20982784, 26228480, 41965568, 52456960, 104913920, 209827840]

約数ペア:

[(1, 209827840), (2, 104913920), (4, 52456960), (5, 41965568), (8, 26228480), (10, 20982784), (16, 13114240), (20, 10491392), (31, 6768640), (32, 6557120), (40, 5245696), (62, 3384320), (64, 3278560), (80, 2622848), (124, 1692160), (128, 1639280), (155, 1353728), (160, 1311424), (248, 846080), (256, 819640), (310, 676864), (320, 655712), (496, 423040), (512, 409820), (620, 338432), (640, 327856), (661, 317440), (992, 211520), (1024, 204910), (1240, 169216), (1280, 163928), (1322, 158720), (1984, 105760), (2048, 102455), (2480, 84608), (2560, 81964), (2644, 79360), (3305, 63488), (3968, 52880), (4960, 42304), (5120, 40982), (5288, 39680), (6610, 31744), (7936, 26440), (9920, 21152), (10240, 20491), (10576, 19840), (13220, 15872)]