161440740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4507}}^1$

素因数の和:4721

約数の個数: 72

約数和(自身を含む): 492273600

約数和(自身を除く): 330832860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 199, 398, 597, 796, 995, 1194, 1791, 1990, 2388, 2985, 3582, 3980, 4507, 5970, 7164, 8955, 9014, 11940, 13521, 17910, 18028, 22535, 27042, 35820, 40563, 45070, 54084, 67605, 81126, 90140, 135210, 162252, 202815, 270420, 405630, 811260, 896893, 1793786, 2690679, 3587572, 4484465, 5381358, 8072037, 8968930, 10762716, 13453395, 16144074, 17937860, 26906790, 32288148, 40360185, 53813580, 80720370, 161440740]

約数ペア:

[(1, 161440740), (2, 80720370), (3, 53813580), (4, 40360185), (5, 32288148), (6, 26906790), (9, 17937860), (10, 16144074), (12, 13453395), (15, 10762716), (18, 8968930), (20, 8072037), (30, 5381358), (36, 4484465), (45, 3587572), (60, 2690679), (90, 1793786), (180, 896893), (199, 811260), (398, 405630), (597, 270420), (796, 202815), (995, 162252), (1194, 135210), (1791, 90140), (1990, 81126), (2388, 67605), (2985, 54084), (3582, 45070), (3980, 40563), (4507, 35820), (5970, 27042), (7164, 22535), (8955, 18028), (9014, 17910), (11940, 13521)]