21831808

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 25169792

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 79, 127, 128, 136, 158, 254, 272, 316, 508, 544, 632, 1016, 1088, 1264, 1343, 2032, 2159, 2176, 2528, 2686, 4064, 4318, 5056, 5372, 8128, 8636, 10033, 10112, 10744, 16256, 17272, 20066, 21488, 34544, 40132, 42976, 69088, 80264, 85952, 138176, 160528, 170561, 171904, 276352, 321056, 341122, 642112, 682244, 1284224, 1364488, 2728976, 5457952, 10915904, 21831808]

約数ペア:

[(1, 21831808), (2, 10915904), (4, 5457952), (8, 2728976), (16, 1364488), (17, 1284224), (32, 682244), (34, 642112), (64, 341122), (68, 321056), (79, 276352), (127, 171904), (128, 170561), (136, 160528), (158, 138176), (254, 85952), (272, 80264), (316, 69088), (508, 42976), (544, 40132), (632, 34544), (1016, 21488), (1088, 20066), (1264, 17272), (1343, 16256), (2032, 10744), (2159, 10112), (2176, 10033), (2528, 8636), (2686, 8128), (4064, 5372), (4318, 5056)]