19811376

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{557}}^1$

素因数の和:603

約数の個数: 120

約数和(自身を含む): 62964720

約数和(自身を除く): 43153344

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 19, 24, 26, 36, 38, 39, 48, 52, 57, 72, 76, 78, 104, 114, 117, 144, 152, 156, 171, 208, 228, 234, 247, 304, 312, 342, 456, 468, 494, 557, 624, 684, 741, 912, 936, 988, 1114, 1368, 1482, 1671, 1872, 1976, 2223, 2228, 2736, 2964, 3342, 3952, 4446, 4456, 5013, 5928, 6684, 7241, 8892, 8912, 10026, 10583, 11856, 13368, 14482, 17784, 20052, 21166, 21723, 26736, 28964, 31749, 35568, 40104, 42332, 43446, 57928, 63498, 65169, 80208, 84664, 86892, 95247, 115856, 126996, 130338, 137579, 169328, 173784, 190494, 253992, 260676, 275158, 347568, 380988, 412737, 507984, 521352, 550316, 761976, 825474, 1042704, 1100632, 1238211, 1523952, 1650948, 2201264, 2476422, 3301896, 4952844, 6603792, 9905688, 19811376]

約数ペア:

[(1, 19811376), (2, 9905688), (3, 6603792), (4, 4952844), (6, 3301896), (8, 2476422), (9, 2201264), (12, 1650948), (13, 1523952), (16, 1238211), (18, 1100632), (19, 1042704), (24, 825474), (26, 761976), (36, 550316), (38, 521352), (39, 507984), (48, 412737), (52, 380988), (57, 347568), (72, 275158), (76, 260676), (78, 253992), (104, 190494), (114, 173784), (117, 169328), (144, 137579), (152, 130338), (156, 126996), (171, 115856), (208, 95247), (228, 86892), (234, 84664), (247, 80208), (304, 65169), (312, 63498), (342, 57928), (456, 43446), (468, 42332), (494, 40104), (557, 35568), (624, 31749), (684, 28964), (741, 26736), (912, 21723), (936, 21166), (988, 20052), (1114, 17784), (1368, 14482), (1482, 13368), (1671, 11856), (1872, 10583), (1976, 10026), (2223, 8912), (2228, 8892), (2736, 7241), (2964, 6684), (3342, 5928), (3952, 5013), (4446, 4456)]