21235992

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:153

約数の個数: 128

約数和(自身を含む): 61378560

約数和(自身を除く): 40142568

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 23, 24, 31, 34, 46, 51, 62, 68, 69, 73, 92, 93, 102, 124, 136, 138, 146, 184, 186, 204, 219, 248, 276, 292, 372, 391, 408, 438, 527, 552, 584, 713, 744, 782, 876, 1054, 1173, 1241, 1426, 1564, 1581, 1679, 1752, 2108, 2139, 2263, 2346, 2482, 2852, 3128, 3162, 3358, 3723, 4216, 4278, 4526, 4692, 4964, 5037, 5704, 6324, 6716, 6789, 7446, 8556, 9052, 9384, 9928, 10074, 12121, 12648, 13432, 13578, 14892, 17112, 18104, 20148, 24242, 27156, 28543, 29784, 36363, 38471, 40296, 48484, 52049, 54312, 57086, 72726, 76942, 85629, 96968, 104098, 114172, 115413, 145452, 153884, 156147, 171258, 208196, 228344, 230826, 290904, 307768, 312294, 342516, 416392, 461652, 624588, 685032, 884833, 923304, 1249176, 1769666, 2654499, 3539332, 5308998, 7078664, 10617996, 21235992]

約数ペア:

[(1, 21235992), (2, 10617996), (3, 7078664), (4, 5308998), (6, 3539332), (8, 2654499), (12, 1769666), (17, 1249176), (23, 923304), (24, 884833), (31, 685032), (34, 624588), (46, 461652), (51, 416392), (62, 342516), (68, 312294), (69, 307768), (73, 290904), (92, 230826), (93, 228344), (102, 208196), (124, 171258), (136, 156147), (138, 153884), (146, 145452), (184, 115413), (186, 114172), (204, 104098), (219, 96968), (248, 85629), (276, 76942), (292, 72726), (372, 57086), (391, 54312), (408, 52049), (438, 48484), (527, 40296), (552, 38471), (584, 36363), (713, 29784), (744, 28543), (782, 27156), (876, 24242), (1054, 20148), (1173, 18104), (1241, 17112), (1426, 14892), (1564, 13578), (1581, 13432), (1679, 12648), (1752, 12121), (2108, 10074), (2139, 9928), (2263, 9384), (2346, 9052), (2482, 8556), (2852, 7446), (3128, 6789), (3162, 6716), (3358, 6324), (3723, 5704), (4216, 5037), (4278, 4964), (4526, 4692)]