21000902580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16667383}}^1$

素因数の和:16667405

約数の個数: 72

約数和(自身を含む): 72803133312

約数和(自身を除く): 51802230732

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16667383, 33334766, 50002149, 66669532, 83336915, 100004298, 116671681, 150006447, 166673830, 200008596, 233343362, 250010745, 300012894, 333347660, 350015043, 466686724, 500021490, 583358405, 600025788, 700030086, 750032235, 1000042980, 1050045129, 1166716810, 1400060172, 1500064470, 1750075215, 2100090258, 2333433620, 3000128940, 3500150430, 4200180516, 5250225645, 7000300860, 10500451290, 21000902580]

約数ペア:

[(1, 21000902580), (2, 10500451290), (3, 7000300860), (4, 5250225645), (5, 4200180516), (6, 3500150430), (7, 3000128940), (9, 2333433620), (10, 2100090258), (12, 1750075215), (14, 1500064470), (15, 1400060172), (18, 1166716810), (20, 1050045129), (21, 1000042980), (28, 750032235), (30, 700030086), (35, 600025788), (36, 583358405), (42, 500021490), (45, 466686724), (60, 350015043), (63, 333347660), (70, 300012894), (84, 250010745), (90, 233343362), (105, 200008596), (126, 166673830), (140, 150006447), (180, 116671681), (210, 100004298), (252, 83336915), (315, 66669532), (420, 50002149), (630, 33334766), (1260, 16667383)]