81565020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{331}}^1$

素因数の和:420

約数の個数: 108

約数和(自身を含む): 255049704

約数和(自身を除く): 173484684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 331, 333, 370, 444, 555, 662, 666, 740, 993, 1110, 1324, 1332, 1369, 1655, 1665, 1986, 2220, 2738, 2979, 3310, 3330, 3972, 4107, 4965, 5476, 5958, 6620, 6660, 6845, 8214, 9930, 11916, 12247, 12321, 13690, 14895, 16428, 19860, 20535, 24494, 24642, 27380, 29790, 36741, 41070, 48988, 49284, 59580, 61235, 61605, 73482, 82140, 110223, 122470, 123210, 146964, 183705, 220446, 244940, 246420, 367410, 440892, 453139, 551115, 734820, 906278, 1102230, 1359417, 1812556, 2204460, 2265695, 2718834, 4078251, 4531390, 5437668, 6797085, 8156502, 9062780, 13594170, 16313004, 20391255, 27188340, 40782510, 81565020]

約数ペア:

[(1, 81565020), (2, 40782510), (3, 27188340), (4, 20391255), (5, 16313004), (6, 13594170), (9, 9062780), (10, 8156502), (12, 6797085), (15, 5437668), (18, 4531390), (20, 4078251), (30, 2718834), (36, 2265695), (37, 2204460), (45, 1812556), (60, 1359417), (74, 1102230), (90, 906278), (111, 734820), (148, 551115), (180, 453139), (185, 440892), (222, 367410), (331, 246420), (333, 244940), (370, 220446), (444, 183705), (555, 146964), (662, 123210), (666, 122470), (740, 110223), (993, 82140), (1110, 73482), (1324, 61605), (1332, 61235), (1369, 59580), (1655, 49284), (1665, 48988), (1986, 41070), (2220, 36741), (2738, 29790), (2979, 27380), (3310, 24642), (3330, 24494), (3972, 20535), (4107, 19860), (4965, 16428), (5476, 14895), (5958, 13690), (6620, 12321), (6660, 12247), (6845, 11916), (8214, 9930)]