20378925

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1$

素因数の和:272

約数の個数: 96

約数和(自身を含む): 45235200

約数和(自身を除く): 24856275

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 27, 35, 45, 57, 63, 75, 95, 105, 133, 135, 171, 175, 189, 225, 227, 285, 315, 399, 475, 513, 525, 665, 675, 681, 855, 945, 1135, 1197, 1425, 1575, 1589, 1995, 2043, 2565, 3325, 3405, 3591, 4275, 4313, 4725, 4767, 5675, 5985, 6129, 7945, 9975, 10215, 12825, 12939, 14301, 17025, 17955, 21565, 23835, 29925, 30191, 30645, 38817, 39725, 42903, 51075, 64695, 71505, 89775, 90573, 107825, 116451, 119175, 150955, 153225, 194085, 214515, 271719, 323475, 357525, 452865, 582255, 754775, 815157, 970425, 1072575, 1358595, 2264325, 2911275, 4075785, 6792975, 20378925]

約数ペア:

[(1, 20378925), (3, 6792975), (5, 4075785), (7, 2911275), (9, 2264325), (15, 1358595), (19, 1072575), (21, 970425), (25, 815157), (27, 754775), (35, 582255), (45, 452865), (57, 357525), (63, 323475), (75, 271719), (95, 214515), (105, 194085), (133, 153225), (135, 150955), (171, 119175), (175, 116451), (189, 107825), (225, 90573), (227, 89775), (285, 71505), (315, 64695), (399, 51075), (475, 42903), (513, 39725), (525, 38817), (665, 30645), (675, 30191), (681, 29925), (855, 23835), (945, 21565), (1135, 17955), (1197, 17025), (1425, 14301), (1575, 12939), (1589, 12825), (1995, 10215), (2043, 9975), (2565, 7945), (3325, 6129), (3405, 5985), (3591, 5675), (4275, 4767), (4313, 4725)]