21034425

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{509}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 37944000

約数和(自身を除く): 16909575

約数列:

[1, 3, 5, 15, 19, 25, 29, 57, 75, 87, 95, 145, 285, 435, 475, 509, 551, 725, 1425, 1527, 1653, 2175, 2545, 2755, 7635, 8265, 9671, 12725, 13775, 14761, 29013, 38175, 41325, 44283, 48355, 73805, 145065, 221415, 241775, 280459, 369025, 725325, 841377, 1107075, 1402295, 4206885, 7011475, 21034425]

約数ペア:

[(1, 21034425), (3, 7011475), (5, 4206885), (15, 1402295), (19, 1107075), (25, 841377), (29, 725325), (57, 369025), (75, 280459), (87, 241775), (95, 221415), (145, 145065), (285, 73805), (435, 48355), (475, 44283), (509, 41325), (551, 38175), (725, 29013), (1425, 14761), (1527, 13775), (1653, 12725), (2175, 9671), (2545, 8265), (2755, 7635)]