18405680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12109}}^1$

素因数の和:12141

約数の個数: 40

約数和(自身を含む): 45049200

約数和(自身を除く): 26643520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12109, 24218, 48436, 60545, 96872, 121090, 193744, 230071, 242180, 460142, 484360, 920284, 968720, 1150355, 1840568, 2300710, 3681136, 4601420, 9202840, 18405680]

約数ペア:

[(1, 18405680), (2, 9202840), (4, 4601420), (5, 3681136), (8, 2300710), (10, 1840568), (16, 1150355), (19, 968720), (20, 920284), (38, 484360), (40, 460142), (76, 242180), (80, 230071), (95, 193744), (152, 121090), (190, 96872), (304, 60545), (380, 48436), (760, 24218), (1520, 12109)]