31384980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{131}}^1$

素因数の和:179

約数の個数: 144

約数和(自身を含む): 105513408

約数和(自身を除く): 74128428

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 121, 131, 132, 165, 180, 198, 220, 242, 262, 330, 363, 393, 396, 484, 495, 524, 605, 655, 660, 726, 786, 990, 1089, 1179, 1210, 1310, 1331, 1441, 1452, 1572, 1815, 1965, 1980, 2178, 2358, 2420, 2620, 2662, 2882, 3630, 3930, 3993, 4323, 4356, 4716, 5324, 5445, 5764, 5895, 6655, 7205, 7260, 7860, 7986, 8646, 10890, 11790, 11979, 12969, 13310, 14410, 15851, 15972, 17292, 19965, 21615, 21780, 23580, 23958, 25938, 26620, 28820, 31702, 39930, 43230, 47553, 47916, 51876, 59895, 63404, 64845, 79255, 79860, 86460, 95106, 119790, 129690, 142659, 158510, 174361, 190212, 237765, 239580, 259380, 285318, 317020, 348722, 475530, 523083, 570636, 697444, 713295, 871805, 951060, 1046166, 1426590, 1569249, 1743610, 2092332, 2615415, 2853180, 3138498, 3487220, 5230830, 6276996, 7846245, 10461660, 15692490, 31384980]

約数ペア:

[(1, 31384980), (2, 15692490), (3, 10461660), (4, 7846245), (5, 6276996), (6, 5230830), (9, 3487220), (10, 3138498), (11, 2853180), (12, 2615415), (15, 2092332), (18, 1743610), (20, 1569249), (22, 1426590), (30, 1046166), (33, 951060), (36, 871805), (44, 713295), (45, 697444), (55, 570636), (60, 523083), (66, 475530), (90, 348722), (99, 317020), (110, 285318), (121, 259380), (131, 239580), (132, 237765), (165, 190212), (180, 174361), (198, 158510), (220, 142659), (242, 129690), (262, 119790), (330, 95106), (363, 86460), (393, 79860), (396, 79255), (484, 64845), (495, 63404), (524, 59895), (605, 51876), (655, 47916), (660, 47553), (726, 43230), (786, 39930), (990, 31702), (1089, 28820), (1179, 26620), (1210, 25938), (1310, 23958), (1331, 23580), (1441, 21780), (1452, 21615), (1572, 19965), (1815, 17292), (1965, 15972), (1980, 15851), (2178, 14410), (2358, 13310), (2420, 12969), (2620, 11979), (2662, 11790), (2882, 10890), (3630, 8646), (3930, 7986), (3993, 7860), (4323, 7260), (4356, 7205), (4716, 6655), (5324, 5895), (5445, 5764)]