20028176

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:256

約数の個数: 80

約数和(自身を含む): 47961216

約数和(自身を除く): 27933040

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 67, 68, 112, 119, 134, 136, 157, 238, 268, 272, 314, 469, 476, 536, 628, 938, 952, 1072, 1099, 1139, 1256, 1876, 1904, 2198, 2278, 2512, 2669, 3752, 4396, 4556, 5338, 7504, 7973, 8792, 9112, 10519, 10676, 15946, 17584, 18224, 18683, 21038, 21352, 31892, 37366, 42076, 42704, 63784, 73633, 74732, 84152, 127568, 147266, 149464, 168304, 178823, 294532, 298928, 357646, 589064, 715292, 1178128, 1251761, 1430584, 2503522, 2861168, 5007044, 10014088, 20028176]

約数ペア:

[(1, 20028176), (2, 10014088), (4, 5007044), (7, 2861168), (8, 2503522), (14, 1430584), (16, 1251761), (17, 1178128), (28, 715292), (34, 589064), (56, 357646), (67, 298928), (68, 294532), (112, 178823), (119, 168304), (134, 149464), (136, 147266), (157, 127568), (238, 84152), (268, 74732), (272, 73633), (314, 63784), (469, 42704), (476, 42076), (536, 37366), (628, 31892), (938, 21352), (952, 21038), (1072, 18683), (1099, 18224), (1139, 17584), (1256, 15946), (1876, 10676), (1904, 10519), (2198, 9112), (2278, 8792), (2512, 7973), (2669, 7504), (3752, 5338), (4396, 4556)]