20558475

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1$

素因数の和:274

約数の個数: 96

約数和(自身を含む): 45632000

約数和(自身を除く): 25073525

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, 229, 285, 315, 399, 475, 513, 525, 665, 675, 687, 855, 945, 1145, 1197, 1425, 1575, 1603, 1995, 2061, 2565, 3325, 3435, 3591, 4275, 4351, 4725, 4809, 5725, 5985, 6183, 8015, 9975, 10305, 12825, 13053, 14427, 17175, 17955, 21755, 24045, 29925, 30457, 30915, 39159, 40075, 43281, 51525, 65265, 72135, 89775, 91371, 108775, 117477, 120225, 152285, 154575, 195795, 216405, 274113, 326325, 360675, 456855, 587385, 761425, 822339, 978975, 1082025, 1370565, 2284275, 2936925, 4111695, 6852825, 20558475]

約数ペア:

[(1, 20558475), (3, 6852825), (5, 4111695), (7, 2936925), (9, 2284275), (15, 1370565), (19, 1082025), (21, 978975), (25, 822339), (27, 761425), (35, 587385), (45, 456855), (57, 360675), (63, 326325), (75, 274113), (95, 216405), (105, 195795), (133, 154575), (135, 152285), (171, 120225), (175, 117477), (189, 108775), (225, 91371), (229, 89775), (285, 72135), (315, 65265), (399, 51525), (475, 43281), (513, 40075), (525, 39159), (665, 30915), (675, 30457), (687, 29925), (855, 24045), (945, 21755), (1145, 17955), (1197, 17175), (1425, 14427), (1575, 13053), (1603, 12825), (1995, 10305), (2061, 9975), (2565, 8015), (3325, 6183), (3435, 5985), (3591, 5725), (4275, 4809), (4351, 4725)]