21337680

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{977}}^1$

素因数の和:1013

約数の個数: 160

約数和(自身を含む): 81494784

約数和(自身を除く): 60157104

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 977, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 1954, 2184, 2730, 2931, 3120, 3640, 3908, 4368, 4885, 5460, 5862, 6839, 7280, 7816, 9770, 10920, 11724, 12701, 13678, 14655, 15632, 19540, 20517, 21840, 23448, 25402, 27356, 29310, 34195, 38103, 39080, 41034, 46896, 50804, 54712, 58620, 63505, 68390, 76206, 78160, 82068, 88907, 101608, 102585, 109424, 117240, 127010, 136780, 152412, 164136, 177814, 190515, 203216, 205170, 234480, 254020, 266721, 273560, 304824, 328272, 355628, 381030, 410340, 444535, 508040, 533442, 547120, 609648, 711256, 762060, 820680, 889070, 1016080, 1066884, 1333605, 1422512, 1524120, 1641360, 1778140, 2133768, 2667210, 3048240, 3556280, 4267536, 5334420, 7112560, 10668840, 21337680]

約数ペア:

[(1, 21337680), (2, 10668840), (3, 7112560), (4, 5334420), (5, 4267536), (6, 3556280), (7, 3048240), (8, 2667210), (10, 2133768), (12, 1778140), (13, 1641360), (14, 1524120), (15, 1422512), (16, 1333605), (20, 1066884), (21, 1016080), (24, 889070), (26, 820680), (28, 762060), (30, 711256), (35, 609648), (39, 547120), (40, 533442), (42, 508040), (48, 444535), (52, 410340), (56, 381030), (60, 355628), (65, 328272), (70, 304824), (78, 273560), (80, 266721), (84, 254020), (91, 234480), (104, 205170), (105, 203216), (112, 190515), (120, 177814), (130, 164136), (140, 152412), (156, 136780), (168, 127010), (182, 117240), (195, 109424), (208, 102585), (210, 101608), (240, 88907), (260, 82068), (273, 78160), (280, 76206), (312, 68390), (336, 63505), (364, 58620), (390, 54712), (420, 50804), (455, 46896), (520, 41034), (546, 39080), (560, 38103), (624, 34195), (728, 29310), (780, 27356), (840, 25402), (910, 23448), (977, 21840), (1040, 20517), (1092, 19540), (1365, 15632), (1456, 14655), (1560, 13678), (1680, 12701), (1820, 11724), (1954, 10920), (2184, 9770), (2730, 7816), (2931, 7280), (3120, 6839), (3640, 5862), (3908, 5460), (4368, 4885)]