20617275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{227}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 39354624

約数和(自身を除く): 18737349

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 173, 175, 227, 519, 525, 681, 865, 1135, 1211, 1589, 2595, 3405, 3633, 4325, 4767, 5675, 6055, 7945, 12975, 17025, 18165, 23835, 30275, 39271, 39725, 90825, 117813, 119175, 196355, 274897, 589065, 824691, 981775, 1374485, 2945325, 4123455, 6872425, 20617275]

約数ペア:

[(1, 20617275), (3, 6872425), (5, 4123455), (7, 2945325), (15, 1374485), (21, 981775), (25, 824691), (35, 589065), (75, 274897), (105, 196355), (173, 119175), (175, 117813), (227, 90825), (519, 39725), (525, 39271), (681, 30275), (865, 23835), (1135, 18165), (1211, 17025), (1589, 12975), (2595, 7945), (3405, 6055), (3633, 5675), (4325, 4767)]