81802240

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1229}}^1$

素因数の和:1267

約数の個数: 88

約数和(自身を含む): 211496040

約数和(自身を除く): 129693800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1024, 1040, 1229, 1280, 1664, 2080, 2458, 2560, 3328, 4160, 4916, 5120, 6145, 6656, 8320, 9832, 12290, 13312, 15977, 16640, 19664, 24580, 31954, 33280, 39328, 49160, 63908, 66560, 78656, 79885, 98320, 127816, 157312, 159770, 196640, 255632, 314624, 319540, 393280, 511264, 629248, 639080, 786560, 1022528, 1258496, 1278160, 1573120, 2045056, 2556320, 3146240, 4090112, 5112640, 6292480, 8180224, 10225280, 16360448, 20450560, 40901120, 81802240]

約数ペア:

[(1, 81802240), (2, 40901120), (4, 20450560), (5, 16360448), (8, 10225280), (10, 8180224), (13, 6292480), (16, 5112640), (20, 4090112), (26, 3146240), (32, 2556320), (40, 2045056), (52, 1573120), (64, 1278160), (65, 1258496), (80, 1022528), (104, 786560), (128, 639080), (130, 629248), (160, 511264), (208, 393280), (256, 319540), (260, 314624), (320, 255632), (416, 196640), (512, 159770), (520, 157312), (640, 127816), (832, 98320), (1024, 79885), (1040, 78656), (1229, 66560), (1280, 63908), (1664, 49160), (2080, 39328), (2458, 33280), (2560, 31954), (3328, 24580), (4160, 19664), (4916, 16640), (5120, 15977), (6145, 13312), (6656, 12290), (8320, 9832)]