21250530

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:488

約数の個数: 96

約数和(自身を含む): 64022400

約数和(自身を除く): 42771870

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 89, 90, 105, 126, 178, 210, 267, 315, 379, 445, 534, 623, 630, 758, 801, 890, 1137, 1246, 1335, 1602, 1869, 1895, 2274, 2653, 2670, 3115, 3411, 3738, 3790, 4005, 5306, 5607, 5685, 6230, 6822, 7959, 8010, 9345, 11214, 11370, 13265, 15918, 17055, 18690, 23877, 26530, 28035, 33731, 34110, 39795, 47754, 56070, 67462, 79590, 101193, 119385, 168655, 202386, 236117, 238770, 303579, 337310, 472234, 505965, 607158, 708351, 1011930, 1180585, 1416702, 1517895, 2125053, 2361170, 3035790, 3541755, 4250106, 7083510, 10625265, 21250530]

約数ペア:

[(1, 21250530), (2, 10625265), (3, 7083510), (5, 4250106), (6, 3541755), (7, 3035790), (9, 2361170), (10, 2125053), (14, 1517895), (15, 1416702), (18, 1180585), (21, 1011930), (30, 708351), (35, 607158), (42, 505965), (45, 472234), (63, 337310), (70, 303579), (89, 238770), (90, 236117), (105, 202386), (126, 168655), (178, 119385), (210, 101193), (267, 79590), (315, 67462), (379, 56070), (445, 47754), (534, 39795), (623, 34110), (630, 33731), (758, 28035), (801, 26530), (890, 23877), (1137, 18690), (1246, 17055), (1335, 15918), (1602, 13265), (1869, 11370), (1895, 11214), (2274, 9345), (2653, 8010), (2670, 7959), (3115, 6822), (3411, 6230), (3738, 5685), (3790, 5607), (4005, 5306)]