81474660

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2647}}^1$

素因数の和:2687

約数の個数: 120

約数和(自身を含む): 269142720

約数和(自身を除く): 187668060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 570, 684, 810, 855, 1026, 1140, 1539, 1620, 1710, 2052, 2565, 2647, 3078, 3420, 5130, 5294, 6156, 7695, 7941, 10260, 10588, 13235, 15390, 15882, 23823, 26470, 30780, 31764, 39705, 47646, 50293, 52940, 71469, 79410, 95292, 100586, 119115, 142938, 150879, 158820, 201172, 214407, 238230, 251465, 285876, 301758, 357345, 428814, 452637, 476460, 502930, 603516, 714690, 754395, 857628, 905274, 1005860, 1072035, 1357911, 1429380, 1508790, 1810548, 2144070, 2263185, 2715822, 3017580, 4073733, 4288140, 4526370, 5431644, 6789555, 8147466, 9052740, 13579110, 16294932, 20368665, 27158220, 40737330, 81474660]

約数ペア:

[(1, 81474660), (2, 40737330), (3, 27158220), (4, 20368665), (5, 16294932), (6, 13579110), (9, 9052740), (10, 8147466), (12, 6789555), (15, 5431644), (18, 4526370), (19, 4288140), (20, 4073733), (27, 3017580), (30, 2715822), (36, 2263185), (38, 2144070), (45, 1810548), (54, 1508790), (57, 1429380), (60, 1357911), (76, 1072035), (81, 1005860), (90, 905274), (95, 857628), (108, 754395), (114, 714690), (135, 603516), (162, 502930), (171, 476460), (180, 452637), (190, 428814), (228, 357345), (270, 301758), (285, 285876), (324, 251465), (342, 238230), (380, 214407), (405, 201172), (513, 158820), (540, 150879), (570, 142938), (684, 119115), (810, 100586), (855, 95292), (1026, 79410), (1140, 71469), (1539, 52940), (1620, 50293), (1710, 47646), (2052, 39705), (2565, 31764), (2647, 30780), (3078, 26470), (3420, 23823), (5130, 15882), (5294, 15390), (6156, 13235), (7695, 10588), (7941, 10260)]