19182020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:405

約数の個数: 96

約数和(自身を含む): 49956480

約数和(自身を除く): 30774460

約数列:

[1, 2, 4, 5, 10, 11, 13, 19, 20, 22, 26, 38, 44, 52, 55, 65, 76, 95, 110, 130, 143, 190, 209, 220, 247, 260, 286, 353, 380, 418, 494, 572, 706, 715, 836, 988, 1045, 1235, 1412, 1430, 1765, 2090, 2470, 2717, 2860, 3530, 3883, 4180, 4589, 4940, 5434, 6707, 7060, 7766, 9178, 10868, 13414, 13585, 15532, 18356, 19415, 22945, 26828, 27170, 33535, 38830, 45890, 50479, 54340, 67070, 73777, 77660, 87191, 91780, 100958, 134140, 147554, 174382, 201916, 252395, 295108, 348764, 368885, 435955, 504790, 737770, 871910, 959101, 1009580, 1475540, 1743820, 1918202, 3836404, 4795505, 9591010, 19182020]

約数ペア:

[(1, 19182020), (2, 9591010), (4, 4795505), (5, 3836404), (10, 1918202), (11, 1743820), (13, 1475540), (19, 1009580), (20, 959101), (22, 871910), (26, 737770), (38, 504790), (44, 435955), (52, 368885), (55, 348764), (65, 295108), (76, 252395), (95, 201916), (110, 174382), (130, 147554), (143, 134140), (190, 100958), (209, 91780), (220, 87191), (247, 77660), (260, 73777), (286, 67070), (353, 54340), (380, 50479), (418, 45890), (494, 38830), (572, 33535), (706, 27170), (715, 26828), (836, 22945), (988, 19415), (1045, 18356), (1235, 15532), (1412, 13585), (1430, 13414), (1765, 10868), (2090, 9178), (2470, 7766), (2717, 7060), (2860, 6707), (3530, 5434), (3883, 4940), (4180, 4589)]