21489778544

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{74489}}^1$

素因数の和:74602

約数の個数: 80

約数和(自身を含む): 47846416800

約数和(自身を除く): 26356638256

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 73, 76, 104, 146, 152, 208, 247, 292, 304, 494, 584, 949, 988, 1168, 1387, 1898, 1976, 2774, 3796, 3952, 5548, 7592, 11096, 15184, 18031, 22192, 36062, 72124, 74489, 144248, 148978, 288496, 297956, 595912, 968357, 1191824, 1415291, 1936714, 2830582, 3873428, 5437697, 5661164, 7746856, 10875394, 11322328, 15493712, 18398783, 21750788, 22644656, 36797566, 43501576, 70690061, 73595132, 87003152, 103316243, 141380122, 147190264, 206632486, 282760244, 294380528, 413264972, 565520488, 826529944, 1131040976, 1343111159, 1653059888, 2686222318, 5372444636, 10744889272, 21489778544]

約数ペア:

[(1, 21489778544), (2, 10744889272), (4, 5372444636), (8, 2686222318), (13, 1653059888), (16, 1343111159), (19, 1131040976), (26, 826529944), (38, 565520488), (52, 413264972), (73, 294380528), (76, 282760244), (104, 206632486), (146, 147190264), (152, 141380122), (208, 103316243), (247, 87003152), (292, 73595132), (304, 70690061), (494, 43501576), (584, 36797566), (949, 22644656), (988, 21750788), (1168, 18398783), (1387, 15493712), (1898, 11322328), (1976, 10875394), (2774, 7746856), (3796, 5661164), (3952, 5437697), (5548, 3873428), (7592, 2830582), (11096, 1936714), (15184, 1415291), (18031, 1191824), (22192, 968357), (36062, 595912), (72124, 297956), (74489, 288496), (144248, 148978)]