20817616

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^2$

素因数の和:152

約数の個数: 60

約数和(自身を含む): 44778880

約数和(自身を除く): 23961264

約数列:

[1, 2, 4, 8, 16, 19, 31, 38, 47, 62, 76, 94, 124, 152, 188, 248, 304, 376, 496, 589, 752, 893, 1178, 1457, 1786, 2209, 2356, 2914, 3572, 4418, 4712, 5828, 7144, 8836, 9424, 11656, 14288, 17672, 23312, 27683, 35344, 41971, 55366, 68479, 83942, 110732, 136958, 167884, 221464, 273916, 335768, 442928, 547832, 671536, 1095664, 1301101, 2602202, 5204404, 10408808, 20817616]

約数ペア:

[(1, 20817616), (2, 10408808), (4, 5204404), (8, 2602202), (16, 1301101), (19, 1095664), (31, 671536), (38, 547832), (47, 442928), (62, 335768), (76, 273916), (94, 221464), (124, 167884), (152, 136958), (188, 110732), (248, 83942), (304, 68479), (376, 55366), (496, 41971), (589, 35344), (752, 27683), (893, 23312), (1178, 17672), (1457, 14288), (1786, 11656), (2209, 9424), (2356, 8836), (2914, 7144), (3572, 5828), (4418, 4712)]