261776240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{27043}}^1$

素因数の和:27078

約数の個数: 60

約数和(自身を含む): 669014472

約数和(自身を除く): 407238232

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2420, 4840, 9680, 27043, 54086, 108172, 135215, 216344, 270430, 297473, 432688, 540860, 594946, 1081720, 1189892, 1487365, 2163440, 2379784, 2974730, 3272203, 4759568, 5949460, 6544406, 11898920, 13088812, 16361015, 23797840, 26177624, 32722030, 52355248, 65444060, 130888120, 261776240]

約数ペア:

[(1, 261776240), (2, 130888120), (4, 65444060), (5, 52355248), (8, 32722030), (10, 26177624), (11, 23797840), (16, 16361015), (20, 13088812), (22, 11898920), (40, 6544406), (44, 5949460), (55, 4759568), (80, 3272203), (88, 2974730), (110, 2379784), (121, 2163440), (176, 1487365), (220, 1189892), (242, 1081720), (440, 594946), (484, 540860), (605, 432688), (880, 297473), (968, 270430), (1210, 216344), (1936, 135215), (2420, 108172), (4840, 54086), (9680, 27043)]