215513865

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4001}}^1$

素因数の和:4044

約数の個数: 80

約数和(自身を含む): 464872320

約数和(自身を除く): 249358455

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 27, 35, 45, 57, 63, 81, 95, 105, 133, 135, 171, 189, 285, 315, 399, 405, 513, 567, 665, 855, 945, 1197, 1539, 1995, 2565, 2835, 3591, 4001, 5985, 7695, 10773, 12003, 17955, 20005, 28007, 36009, 53865, 60015, 76019, 84021, 108027, 140035, 180045, 228057, 252063, 324081, 380095, 420105, 532133, 540135, 684171, 756189, 1140285, 1260315, 1596399, 1620405, 2052513, 2268567, 2660665, 3420855, 3780945, 4789197, 6157539, 7981995, 10262565, 11342835, 14367591, 23945985, 30787695, 43102773, 71837955, 215513865]

約数ペア:

[(1, 215513865), (3, 71837955), (5, 43102773), (7, 30787695), (9, 23945985), (15, 14367591), (19, 11342835), (21, 10262565), (27, 7981995), (35, 6157539), (45, 4789197), (57, 3780945), (63, 3420855), (81, 2660665), (95, 2268567), (105, 2052513), (133, 1620405), (135, 1596399), (171, 1260315), (189, 1140285), (285, 756189), (315, 684171), (399, 540135), (405, 532133), (513, 420105), (567, 380095), (665, 324081), (855, 252063), (945, 228057), (1197, 180045), (1539, 140035), (1995, 108027), (2565, 84021), (2835, 76019), (3591, 60015), (4001, 53865), (5985, 36009), (7695, 28007), (10773, 20005), (12003, 17955)]