19871744

素因数分解:

$2^{11}\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 41146560

約数和(自身を除く): 21274816

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 313, 496, 512, 626, 992, 1024, 1252, 1984, 2048, 2504, 3968, 5008, 7936, 9703, 10016, 15872, 19406, 20032, 31744, 38812, 40064, 63488, 77624, 80128, 155248, 160256, 310496, 320512, 620992, 641024, 1241984, 2483968, 4967936, 9935872, 19871744]

約数ペア:

[(1, 19871744), (2, 9935872), (4, 4967936), (8, 2483968), (16, 1241984), (31, 641024), (32, 620992), (62, 320512), (64, 310496), (124, 160256), (128, 155248), (248, 80128), (256, 77624), (313, 63488), (496, 40064), (512, 38812), (626, 31744), (992, 20032), (1024, 19406), (1252, 15872), (1984, 10016), (2048, 9703), (2504, 7936), (3968, 5008)]