18737840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:330

約数の個数: 80

約数和(自身を含む): 48211200

約数和(自身を除く): 29473360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 107, 110, 176, 199, 214, 220, 398, 428, 440, 535, 796, 856, 880, 995, 1070, 1177, 1592, 1712, 1990, 2140, 2189, 2354, 3184, 3980, 4280, 4378, 4708, 5885, 7960, 8560, 8756, 9416, 10945, 11770, 15920, 17512, 18832, 21293, 21890, 23540, 35024, 42586, 43780, 47080, 85172, 87560, 94160, 106465, 170344, 175120, 212930, 234223, 340688, 425860, 468446, 851720, 936892, 1171115, 1703440, 1873784, 2342230, 3747568, 4684460, 9368920, 18737840]

約数ペア:

[(1, 18737840), (2, 9368920), (4, 4684460), (5, 3747568), (8, 2342230), (10, 1873784), (11, 1703440), (16, 1171115), (20, 936892), (22, 851720), (40, 468446), (44, 425860), (55, 340688), (80, 234223), (88, 212930), (107, 175120), (110, 170344), (176, 106465), (199, 94160), (214, 87560), (220, 85172), (398, 47080), (428, 43780), (440, 42586), (535, 35024), (796, 23540), (856, 21890), (880, 21293), (995, 18832), (1070, 17512), (1177, 15920), (1592, 11770), (1712, 10945), (1990, 9416), (2140, 8756), (2189, 8560), (2354, 7960), (3184, 5885), (3980, 4708), (4280, 4378)]