19910385

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 41558400

約数和(自身を除く): 21648015

約数列:

[1, 3, 5, 9, 11, 15, 19, 29, 33, 45, 55, 57, 73, 87, 95, 99, 145, 165, 171, 209, 219, 261, 285, 319, 365, 435, 495, 551, 627, 657, 803, 855, 957, 1045, 1095, 1305, 1387, 1595, 1653, 1881, 2117, 2409, 2755, 2871, 3135, 3285, 4015, 4161, 4785, 4959, 6061, 6351, 6935, 7227, 8265, 9405, 10585, 12045, 12483, 14355, 15257, 18183, 19053, 20805, 23287, 24795, 30305, 31755, 36135, 40223, 45771, 54549, 62415, 69861, 76285, 90915, 95265, 116435, 120669, 137313, 201115, 209583, 228855, 272745, 349305, 362007, 442453, 603345, 686565, 1047915, 1327359, 1810035, 2212265, 3982077, 6636795, 19910385]

約数ペア:

[(1, 19910385), (3, 6636795), (5, 3982077), (9, 2212265), (11, 1810035), (15, 1327359), (19, 1047915), (29, 686565), (33, 603345), (45, 442453), (55, 362007), (57, 349305), (73, 272745), (87, 228855), (95, 209583), (99, 201115), (145, 137313), (165, 120669), (171, 116435), (209, 95265), (219, 90915), (261, 76285), (285, 69861), (319, 62415), (365, 54549), (435, 45771), (495, 40223), (551, 36135), (627, 31755), (657, 30305), (803, 24795), (855, 23287), (957, 20805), (1045, 19053), (1095, 18183), (1305, 15257), (1387, 14355), (1595, 12483), (1653, 12045), (1881, 10585), (2117, 9405), (2409, 8265), (2755, 7227), (2871, 6935), (3135, 6351), (3285, 6061), (4015, 4959), (4161, 4785)]