81938403846

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1643963}}^1$

素因数の和:1644058

約数の個数: 64

約数和(自身を含む): 198853885440

約数和(自身を除く): 116915481594

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 71, 78, 117, 142, 213, 234, 351, 426, 639, 702, 923, 1278, 1846, 1917, 2769, 3834, 5538, 8307, 16614, 24921, 49842, 1643963, 3287926, 4931889, 9863778, 14795667, 21371519, 29591334, 42743038, 44387001, 64114557, 88774002, 116721373, 128229114, 192343671, 233442746, 350164119, 384687342, 577031013, 700328238, 1050492357, 1154062026, 1517377849, 2100984714, 3034755698, 3151477071, 4552133547, 6302954142, 9104267094, 13656400641, 27312801282, 40969201923, 81938403846]

約数ペア:

[(1, 81938403846), (2, 40969201923), (3, 27312801282), (6, 13656400641), (9, 9104267094), (13, 6302954142), (18, 4552133547), (26, 3151477071), (27, 3034755698), (39, 2100984714), (54, 1517377849), (71, 1154062026), (78, 1050492357), (117, 700328238), (142, 577031013), (213, 384687342), (234, 350164119), (351, 233442746), (426, 192343671), (639, 128229114), (702, 116721373), (923, 88774002), (1278, 64114557), (1846, 44387001), (1917, 42743038), (2769, 29591334), (3834, 21371519), (5538, 14795667), (8307, 9863778), (16614, 4931889), (24921, 3287926), (49842, 1643963)]