21000921882

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{41203}}^1$

素因数の和:41507

約数の個数: 64

約数和(自身を含む): 46992337920

約数和(自身を除く): 25991416038

約数列:

[1, 2, 3, 6, 17, 19, 34, 38, 51, 57, 102, 114, 263, 323, 526, 646, 789, 969, 1578, 1938, 4471, 4997, 8942, 9994, 13413, 14991, 26826, 29982, 41203, 82406, 84949, 123609, 169898, 247218, 254847, 509694, 700451, 782857, 1400902, 1565714, 2101353, 2348571, 4202706, 4697142, 10836389, 13308569, 21672778, 26617138, 32509167, 39925707, 65018334, 79851414, 184218613, 205891391, 368437226, 411782782, 552655839, 617674173, 1105311678, 1235348346, 3500153647, 7000307294, 10500460941, 21000921882]

約数ペア:

[(1, 21000921882), (2, 10500460941), (3, 7000307294), (6, 3500153647), (17, 1235348346), (19, 1105311678), (34, 617674173), (38, 552655839), (51, 411782782), (57, 368437226), (102, 205891391), (114, 184218613), (263, 79851414), (323, 65018334), (526, 39925707), (646, 32509167), (789, 26617138), (969, 21672778), (1578, 13308569), (1938, 10836389), (4471, 4697142), (4997, 4202706), (8942, 2348571), (9994, 2101353), (13413, 1565714), (14991, 1400902), (26826, 782857), (29982, 700451), (41203, 509694), (82406, 254847), (84949, 247218), (123609, 169898)]