19803888

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:247

約数の個数: 120

約数和(自身を含む): 60933600

約数和(自身を除く): 41129712

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 71, 72, 78, 104, 117, 142, 144, 149, 156, 208, 213, 234, 284, 298, 312, 426, 447, 468, 568, 596, 624, 639, 852, 894, 923, 936, 1136, 1192, 1278, 1341, 1704, 1788, 1846, 1872, 1937, 2384, 2556, 2682, 2769, 3408, 3576, 3692, 3874, 5112, 5364, 5538, 5811, 7152, 7384, 7748, 8307, 10224, 10579, 10728, 11076, 11622, 14768, 15496, 16614, 17433, 21158, 21456, 22152, 23244, 30992, 31737, 33228, 34866, 42316, 44304, 46488, 63474, 66456, 69732, 84632, 92976, 95211, 126948, 132912, 137527, 139464, 169264, 190422, 253896, 275054, 278928, 380844, 412581, 507792, 550108, 761688, 825162, 1100216, 1237743, 1523376, 1650324, 2200432, 2475486, 3300648, 4950972, 6601296, 9901944, 19803888]

約数ペア:

[(1, 19803888), (2, 9901944), (3, 6601296), (4, 4950972), (6, 3300648), (8, 2475486), (9, 2200432), (12, 1650324), (13, 1523376), (16, 1237743), (18, 1100216), (24, 825162), (26, 761688), (36, 550108), (39, 507792), (48, 412581), (52, 380844), (71, 278928), (72, 275054), (78, 253896), (104, 190422), (117, 169264), (142, 139464), (144, 137527), (149, 132912), (156, 126948), (208, 95211), (213, 92976), (234, 84632), (284, 69732), (298, 66456), (312, 63474), (426, 46488), (447, 44304), (468, 42316), (568, 34866), (596, 33228), (624, 31737), (639, 30992), (852, 23244), (894, 22152), (923, 21456), (936, 21158), (1136, 17433), (1192, 16614), (1278, 15496), (1341, 14768), (1704, 11622), (1788, 11076), (1846, 10728), (1872, 10579), (1937, 10224), (2384, 8307), (2556, 7748), (2682, 7384), (2769, 7152), (3408, 5811), (3576, 5538), (3692, 5364), (3874, 5112)]