19402020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:306

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 46642140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 41, 44, 45, 55, 60, 66, 82, 90, 99, 110, 123, 132, 164, 165, 180, 198, 205, 220, 239, 246, 330, 369, 396, 410, 451, 478, 492, 495, 615, 660, 717, 738, 820, 902, 956, 990, 1195, 1230, 1353, 1434, 1476, 1804, 1845, 1980, 2151, 2255, 2390, 2460, 2629, 2706, 2868, 3585, 3690, 4059, 4302, 4510, 4780, 5258, 5412, 6765, 7170, 7380, 7887, 8118, 8604, 9020, 9799, 10516, 10755, 13145, 13530, 14340, 15774, 16236, 19598, 20295, 21510, 23661, 26290, 27060, 29397, 31548, 39196, 39435, 40590, 43020, 47322, 48995, 52580, 58794, 78870, 81180, 88191, 94644, 97990, 107789, 117588, 118305, 146985, 157740, 176382, 195980, 215578, 236610, 293970, 323367, 352764, 431156, 440955, 473220, 538945, 587940, 646734, 881910, 970101, 1077890, 1293468, 1616835, 1763820, 1940202, 2155780, 3233670, 3880404, 4850505, 6467340, 9701010, 19402020]

約数ペア:

[(1, 19402020), (2, 9701010), (3, 6467340), (4, 4850505), (5, 3880404), (6, 3233670), (9, 2155780), (10, 1940202), (11, 1763820), (12, 1616835), (15, 1293468), (18, 1077890), (20, 970101), (22, 881910), (30, 646734), (33, 587940), (36, 538945), (41, 473220), (44, 440955), (45, 431156), (55, 352764), (60, 323367), (66, 293970), (82, 236610), (90, 215578), (99, 195980), (110, 176382), (123, 157740), (132, 146985), (164, 118305), (165, 117588), (180, 107789), (198, 97990), (205, 94644), (220, 88191), (239, 81180), (246, 78870), (330, 58794), (369, 52580), (396, 48995), (410, 47322), (451, 43020), (478, 40590), (492, 39435), (495, 39196), (615, 31548), (660, 29397), (717, 27060), (738, 26290), (820, 23661), (902, 21510), (956, 20295), (990, 19598), (1195, 16236), (1230, 15774), (1353, 14340), (1434, 13530), (1476, 13145), (1804, 10755), (1845, 10516), (1980, 9799), (2151, 9020), (2255, 8604), (2390, 8118), (2460, 7887), (2629, 7380), (2706, 7170), (2868, 6765), (3585, 5412), (3690, 5258), (4059, 4780), (4302, 4510)]