19878180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:138

約数の個数: 192

約数和(自身を含む): 69672960

約数和(自身を除く): 49794780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 47, 53, 57, 60, 70, 76, 84, 94, 95, 105, 106, 114, 133, 140, 141, 159, 188, 190, 210, 212, 228, 235, 265, 266, 282, 285, 318, 329, 371, 380, 399, 420, 470, 530, 532, 564, 570, 636, 658, 665, 705, 742, 795, 798, 893, 940, 987, 1007, 1060, 1113, 1140, 1316, 1330, 1410, 1484, 1590, 1596, 1645, 1786, 1855, 1974, 1995, 2014, 2226, 2491, 2660, 2679, 2820, 3021, 3180, 3290, 3572, 3710, 3948, 3990, 4028, 4452, 4465, 4935, 4982, 5035, 5358, 5565, 6042, 6251, 6580, 7049, 7420, 7473, 7980, 8930, 9870, 9964, 10070, 10716, 11130, 12084, 12455, 12502, 13395, 14098, 14946, 15105, 17437, 17860, 18753, 19740, 20140, 21147, 22260, 24910, 25004, 26790, 28196, 29892, 30210, 31255, 34874, 35245, 37365, 37506, 42294, 47329, 49820, 52311, 53580, 60420, 62510, 69748, 70490, 74730, 75012, 84588, 87185, 93765, 94658, 104622, 105735, 125020, 140980, 141987, 149460, 174370, 187530, 189316, 209244, 211470, 236645, 261555, 283974, 331303, 348740, 375060, 422940, 473290, 523110, 567948, 662606, 709935, 946580, 993909, 1046220, 1325212, 1419870, 1656515, 1987818, 2839740, 3313030, 3975636, 4969545, 6626060, 9939090, 19878180]

約数ペア:

[(1, 19878180), (2, 9939090), (3, 6626060), (4, 4969545), (5, 3975636), (6, 3313030), (7, 2839740), (10, 1987818), (12, 1656515), (14, 1419870), (15, 1325212), (19, 1046220), (20, 993909), (21, 946580), (28, 709935), (30, 662606), (35, 567948), (38, 523110), (42, 473290), (47, 422940), (53, 375060), (57, 348740), (60, 331303), (70, 283974), (76, 261555), (84, 236645), (94, 211470), (95, 209244), (105, 189316), (106, 187530), (114, 174370), (133, 149460), (140, 141987), (141, 140980), (159, 125020), (188, 105735), (190, 104622), (210, 94658), (212, 93765), (228, 87185), (235, 84588), (265, 75012), (266, 74730), (282, 70490), (285, 69748), (318, 62510), (329, 60420), (371, 53580), (380, 52311), (399, 49820), (420, 47329), (470, 42294), (530, 37506), (532, 37365), (564, 35245), (570, 34874), (636, 31255), (658, 30210), (665, 29892), (705, 28196), (742, 26790), (795, 25004), (798, 24910), (893, 22260), (940, 21147), (987, 20140), (1007, 19740), (1060, 18753), (1113, 17860), (1140, 17437), (1316, 15105), (1330, 14946), (1410, 14098), (1484, 13395), (1590, 12502), (1596, 12455), (1645, 12084), (1786, 11130), (1855, 10716), (1974, 10070), (1995, 9964), (2014, 9870), (2226, 8930), (2491, 7980), (2660, 7473), (2679, 7420), (2820, 7049), (3021, 6580), (3180, 6251), (3290, 6042), (3572, 5565), (3710, 5358), (3948, 5035), (3990, 4982), (4028, 4935), (4452, 4465)]