20778210

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{419}}^1$

素因数の和:480

約数の個数: 96

約数和(自身を含む): 58968000

約数和(自身を除く): 38189790

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 29, 30, 38, 45, 57, 58, 87, 90, 95, 114, 145, 171, 174, 190, 261, 285, 290, 342, 419, 435, 522, 551, 570, 838, 855, 870, 1102, 1257, 1305, 1653, 1710, 2095, 2514, 2610, 2755, 3306, 3771, 4190, 4959, 5510, 6285, 7542, 7961, 8265, 9918, 12151, 12570, 15922, 16530, 18855, 23883, 24302, 24795, 36453, 37710, 39805, 47766, 49590, 60755, 71649, 72906, 79610, 109359, 119415, 121510, 143298, 182265, 218718, 230869, 238830, 358245, 364530, 461738, 546795, 692607, 716490, 1093590, 1154345, 1385214, 2077821, 2308690, 3463035, 4155642, 6926070, 10389105, 20778210]

約数ペア:

[(1, 20778210), (2, 10389105), (3, 6926070), (5, 4155642), (6, 3463035), (9, 2308690), (10, 2077821), (15, 1385214), (18, 1154345), (19, 1093590), (29, 716490), (30, 692607), (38, 546795), (45, 461738), (57, 364530), (58, 358245), (87, 238830), (90, 230869), (95, 218718), (114, 182265), (145, 143298), (171, 121510), (174, 119415), (190, 109359), (261, 79610), (285, 72906), (290, 71649), (342, 60755), (419, 49590), (435, 47766), (522, 39805), (551, 37710), (570, 36453), (838, 24795), (855, 24302), (870, 23883), (1102, 18855), (1257, 16530), (1305, 15922), (1653, 12570), (1710, 12151), (2095, 9918), (2514, 8265), (2610, 7961), (2755, 7542), (3306, 6285), (3771, 5510), (4190, 4959)]