19891575

素因数分解:

$3^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:99

約数の個数: 120

約数和(自身を含む): 43211520

約数和(自身を除く): 23319945

約数列:

[1, 3, 5, 9, 11, 15, 19, 25, 27, 33, 45, 47, 55, 57, 75, 81, 95, 99, 135, 141, 165, 171, 209, 225, 235, 275, 285, 297, 405, 423, 475, 495, 513, 517, 627, 675, 705, 825, 855, 891, 893, 1045, 1175, 1269, 1425, 1485, 1539, 1551, 1881, 2025, 2115, 2475, 2565, 2585, 2679, 3135, 3525, 3807, 4275, 4455, 4465, 4653, 5225, 5643, 6345, 7425, 7695, 7755, 8037, 9405, 9823, 10575, 12825, 12925, 13395, 13959, 15675, 16929, 19035, 22275, 22325, 23265, 24111, 28215, 29469, 31725, 38475, 38775, 40185, 41877, 47025, 49115, 66975, 69795, 72333, 84645, 88407, 95175, 116325, 120555, 141075, 147345, 200925, 209385, 245575, 265221, 348975, 361665, 423225, 442035, 602775, 736725, 795663, 1046925, 1326105, 1808325, 2210175, 3978315, 6630525, 19891575]

約数ペア:

[(1, 19891575), (3, 6630525), (5, 3978315), (9, 2210175), (11, 1808325), (15, 1326105), (19, 1046925), (25, 795663), (27, 736725), (33, 602775), (45, 442035), (47, 423225), (55, 361665), (57, 348975), (75, 265221), (81, 245575), (95, 209385), (99, 200925), (135, 147345), (141, 141075), (165, 120555), (171, 116325), (209, 95175), (225, 88407), (235, 84645), (275, 72333), (285, 69795), (297, 66975), (405, 49115), (423, 47025), (475, 41877), (495, 40185), (513, 38775), (517, 38475), (627, 31725), (675, 29469), (705, 28215), (825, 24111), (855, 23265), (891, 22325), (893, 22275), (1045, 19035), (1175, 16929), (1269, 15675), (1425, 13959), (1485, 13395), (1539, 12925), (1551, 12825), (1881, 10575), (2025, 9823), (2115, 9405), (2475, 8037), (2565, 7755), (2585, 7695), (2679, 7425), (3135, 6345), (3525, 5643), (3807, 5225), (4275, 4653), (4455, 4465)]