20187783100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{9829}}^1$

素因数の和:9932

約数の個数: 144

約数和(自身を含む): 49146854400

約数和(自身を除く): 28959071300

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 25, 38, 46, 47, 50, 76, 92, 94, 95, 100, 115, 188, 190, 230, 235, 380, 437, 460, 470, 475, 575, 874, 893, 940, 950, 1081, 1150, 1175, 1748, 1786, 1900, 2162, 2185, 2300, 2350, 3572, 4324, 4370, 4465, 4700, 5405, 8740, 8930, 9829, 10810, 10925, 17860, 19658, 20539, 21620, 21850, 22325, 27025, 39316, 41078, 43700, 44650, 49145, 54050, 82156, 89300, 98290, 102695, 108100, 186751, 196580, 205390, 226067, 245725, 373502, 410780, 452134, 461963, 491450, 513475, 747004, 904268, 923926, 933755, 982900, 1026950, 1130335, 1847852, 1867510, 2053900, 2260670, 2309815, 3735020, 4295273, 4521340, 4619630, 4668775, 5651675, 8590546, 8777297, 9239260, 9337550, 10625149, 11303350, 11549075, 17181092, 17554594, 18675100, 21250298, 21476365, 22606700, 23098150, 35109188, 42500596, 42952730, 43886485, 46196300, 53125745, 85905460, 87772970, 106251490, 107381825, 175545940, 201877831, 212502980, 214763650, 219432425, 265628725, 403755662, 429527300, 438864850, 531257450, 807511324, 877729700, 1009389155, 1062514900, 2018778310, 4037556620, 5046945775, 10093891550, 20187783100]

約数ペア:

[(1, 20187783100), (2, 10093891550), (4, 5046945775), (5, 4037556620), (10, 2018778310), (19, 1062514900), (20, 1009389155), (23, 877729700), (25, 807511324), (38, 531257450), (46, 438864850), (47, 429527300), (50, 403755662), (76, 265628725), (92, 219432425), (94, 214763650), (95, 212502980), (100, 201877831), (115, 175545940), (188, 107381825), (190, 106251490), (230, 87772970), (235, 85905460), (380, 53125745), (437, 46196300), (460, 43886485), (470, 42952730), (475, 42500596), (575, 35109188), (874, 23098150), (893, 22606700), (940, 21476365), (950, 21250298), (1081, 18675100), (1150, 17554594), (1175, 17181092), (1748, 11549075), (1786, 11303350), (1900, 10625149), (2162, 9337550), (2185, 9239260), (2300, 8777297), (2350, 8590546), (3572, 5651675), (4324, 4668775), (4370, 4619630), (4465, 4521340), (4700, 4295273), (5405, 3735020), (8740, 2309815), (8930, 2260670), (9829, 2053900), (10810, 1867510), (10925, 1847852), (17860, 1130335), (19658, 1026950), (20539, 982900), (21620, 933755), (21850, 923926), (22325, 904268), (27025, 747004), (39316, 513475), (41078, 491450), (43700, 461963), (44650, 452134), (49145, 410780), (54050, 373502), (82156, 245725), (89300, 226067), (98290, 205390), (102695, 196580), (108100, 186751)]