20718512

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{211}}^1$

素因数の和:274

約数の個数: 60

約数和(自身を含む): 45070776

約数和(自身を除く): 24352264

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 211, 272, 304, 323, 361, 422, 646, 722, 844, 1292, 1444, 1688, 2584, 2888, 3376, 3587, 4009, 5168, 5776, 6137, 7174, 8018, 12274, 14348, 16036, 24548, 28696, 32072, 49096, 57392, 64144, 68153, 76171, 98192, 136306, 152342, 272612, 304684, 545224, 609368, 1090448, 1218736, 1294907, 2589814, 5179628, 10359256, 20718512]

約数ペア:

[(1, 20718512), (2, 10359256), (4, 5179628), (8, 2589814), (16, 1294907), (17, 1218736), (19, 1090448), (34, 609368), (38, 545224), (68, 304684), (76, 272612), (136, 152342), (152, 136306), (211, 98192), (272, 76171), (304, 68153), (323, 64144), (361, 57392), (422, 49096), (646, 32072), (722, 28696), (844, 24548), (1292, 16036), (1444, 14348), (1688, 12274), (2584, 8018), (2888, 7174), (3376, 6137), (3587, 5776), (4009, 5168)]