18993616

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1453}}^1$

素因数の和:1523

約数の個数: 40

約数和(自身を含む): 39665120

約数和(自身を除く): 20671504

約数列:

[1, 2, 4, 8, 16, 19, 38, 43, 76, 86, 152, 172, 304, 344, 688, 817, 1453, 1634, 2906, 3268, 5812, 6536, 11624, 13072, 23248, 27607, 55214, 62479, 110428, 124958, 220856, 249916, 441712, 499832, 999664, 1187101, 2374202, 4748404, 9496808, 18993616]

約数ペア:

[(1, 18993616), (2, 9496808), (4, 4748404), (8, 2374202), (16, 1187101), (19, 999664), (38, 499832), (43, 441712), (76, 249916), (86, 220856), (152, 124958), (172, 110428), (304, 62479), (344, 55214), (688, 27607), (817, 23248), (1453, 13072), (1634, 11624), (2906, 6536), (3268, 5812)]