65201920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{383}}^1$

素因数の和:430

約数の個数: 144

約数和(自身を含む): 188375040

約数和(自身を除く): 123173120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 128, 133, 140, 152, 160, 190, 224, 256, 266, 280, 304, 320, 380, 383, 448, 532, 560, 608, 640, 665, 760, 766, 896, 1064, 1120, 1216, 1280, 1330, 1520, 1532, 1792, 1915, 2128, 2240, 2432, 2660, 2681, 3040, 3064, 3830, 4256, 4480, 4864, 5320, 5362, 6080, 6128, 7277, 7660, 8512, 8960, 10640, 10724, 12160, 12256, 13405, 14554, 15320, 17024, 21280, 21448, 24320, 24512, 26810, 29108, 30640, 34048, 36385, 42560, 42896, 49024, 50939, 53620, 58216, 61280, 72770, 85120, 85792, 98048, 101878, 107240, 116432, 122560, 145540, 170240, 171584, 203756, 214480, 232864, 245120, 254695, 291080, 343168, 407512, 428960, 465728, 490240, 509390, 582160, 686336, 815024, 857920, 931456, 1018780, 1164320, 1630048, 1715840, 1862912, 2037560, 2328640, 3260096, 3431680, 4075120, 4657280, 6520192, 8150240, 9314560, 13040384, 16300480, 32600960, 65201920]

約数ペア:

[(1, 65201920), (2, 32600960), (4, 16300480), (5, 13040384), (7, 9314560), (8, 8150240), (10, 6520192), (14, 4657280), (16, 4075120), (19, 3431680), (20, 3260096), (28, 2328640), (32, 2037560), (35, 1862912), (38, 1715840), (40, 1630048), (56, 1164320), (64, 1018780), (70, 931456), (76, 857920), (80, 815024), (95, 686336), (112, 582160), (128, 509390), (133, 490240), (140, 465728), (152, 428960), (160, 407512), (190, 343168), (224, 291080), (256, 254695), (266, 245120), (280, 232864), (304, 214480), (320, 203756), (380, 171584), (383, 170240), (448, 145540), (532, 122560), (560, 116432), (608, 107240), (640, 101878), (665, 98048), (760, 85792), (766, 85120), (896, 72770), (1064, 61280), (1120, 58216), (1216, 53620), (1280, 50939), (1330, 49024), (1520, 42896), (1532, 42560), (1792, 36385), (1915, 34048), (2128, 30640), (2240, 29108), (2432, 26810), (2660, 24512), (2681, 24320), (3040, 21448), (3064, 21280), (3830, 17024), (4256, 15320), (4480, 14554), (4864, 13405), (5320, 12256), (5362, 12160), (6080, 10724), (6128, 10640), (7277, 8960), (7660, 8512)]