20199870540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{647}}^1\times {\mathrm{5981}}^1$

素因数の和:6672

約数の個数: 144

約数和(自身を含む): 63494383680

約数和(自身を除く): 43294513140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 647, 870, 1044, 1294, 1305, 1740, 1941, 2588, 2610, 3235, 3882, 5220, 5823, 5981, 6470, 7764, 9705, 11646, 11962, 12940, 17943, 18763, 19410, 23292, 23924, 29115, 29905, 35886, 37526, 38820, 53829, 56289, 58230, 59810, 71772, 75052, 89715, 93815, 107658, 112578, 116460, 119620, 168867, 173449, 179430, 187630, 215316, 225156, 269145, 281445, 337734, 346898, 358860, 375260, 520347, 538290, 562890, 675468, 693796, 844335, 867245, 1040694, 1076580, 1125780, 1561041, 1688670, 1734490, 2081388, 2601735, 3122082, 3377340, 3468980, 3869707, 5203470, 6244164, 7739414, 7805205, 10406940, 11609121, 15478828, 15610410, 19348535, 23218242, 31220820, 34827363, 38697070, 46436484, 58045605, 69654726, 77394140, 112221503, 116091210, 139309452, 174136815, 224443006, 232182420, 336664509, 348273630, 448886012, 561107515, 673329018, 696547260, 1009993527, 1122215030, 1346658036, 1683322545, 2019987054, 2244430060, 3366645090, 4039974108, 5049967635, 6733290180, 10099935270, 20199870540]

約数ペア:

[(1, 20199870540), (2, 10099935270), (3, 6733290180), (4, 5049967635), (5, 4039974108), (6, 3366645090), (9, 2244430060), (10, 2019987054), (12, 1683322545), (15, 1346658036), (18, 1122215030), (20, 1009993527), (29, 696547260), (30, 673329018), (36, 561107515), (45, 448886012), (58, 348273630), (60, 336664509), (87, 232182420), (90, 224443006), (116, 174136815), (145, 139309452), (174, 116091210), (180, 112221503), (261, 77394140), (290, 69654726), (348, 58045605), (435, 46436484), (522, 38697070), (580, 34827363), (647, 31220820), (870, 23218242), (1044, 19348535), (1294, 15610410), (1305, 15478828), (1740, 11609121), (1941, 10406940), (2588, 7805205), (2610, 7739414), (3235, 6244164), (3882, 5203470), (5220, 3869707), (5823, 3468980), (5981, 3377340), (6470, 3122082), (7764, 2601735), (9705, 2081388), (11646, 1734490), (11962, 1688670), (12940, 1561041), (17943, 1125780), (18763, 1076580), (19410, 1040694), (23292, 867245), (23924, 844335), (29115, 693796), (29905, 675468), (35886, 562890), (37526, 538290), (38820, 520347), (53829, 375260), (56289, 358860), (58230, 346898), (59810, 337734), (71772, 281445), (75052, 269145), (89715, 225156), (93815, 215316), (107658, 187630), (112578, 179430), (116460, 173449), (119620, 168867)]