21872353.000000000

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:238

約数の個数: 160

約数和(自身を含む): 363394944

約数和(自身を除く): 233249166

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 27, 34, 42, 43, 51, 54, 63, 81, 86, 102, 119, 126, 129, 153, 157, 162, 189, 238, 258, 301, 306, 314, 357, 378, 387, 459, 471, 567, 602, 714, 731, 774, 903, 918, 942, 1071, 1099, 1134, 1161, 1377, 1413, 1462, 1806, 2142, 2193, 2198, 2322, 2669, 2709, 2754, 2826, 3213, 3297, 3483, 4239, 4386, 5117, 5338, 5418, 6426, 6579, 6594, 6751, 6966, 8007, 8127, 8478, 9639, 9891, 10234, 12717, 13158, 13502, 15351, 16014, 16254, 18683, 19278, 19737, 19782, 20253, 24021, 24381, 25434, 29673, 30702, 37366, 39474, 40506, 46053, 47257, 48042, 48762, 56049, 59211, 59346, 60759, 72063, 89019, 92106, 94514, 112098, 114767, 118422, 121518, 138159, 141771, 144126, 168147, 178038, 182277, 216189, 229534, 276318, 283542, 336294, 344301, 364554, 414477, 425313, 432378, 504441, 546831, 688602, 803369, 828954, 850626, 1008882, 1032903, 1093662, 1275939, 1513323, 1606738, 2065806, 2410107, 2551878, 3026646, 3098709, 3827817, 4820214, 6197418, 7230321, 7655634, 9296127, 14460642, 18592254, 21690963, 43381926, 65072889, 130145778]

約数ペア:

[(1, 130145778), (2, 65072889), (3, 43381926), (6, 21690963), (7, 18592254), (9, 14460642), (14, 9296127), (17, 7655634), (18, 7230321), (21, 6197418), (27, 4820214), (34, 3827817), (42, 3098709), (43, 3026646), (51, 2551878), (54, 2410107), (63, 2065806), (81, 1606738), (86, 1513323), (102, 1275939), (119, 1093662), (126, 1032903), (129, 1008882), (153, 850626), (157, 828954), (162, 803369), (189, 688602), (238, 546831), (258, 504441), (301, 432378), (306, 425313), (314, 414477), (357, 364554), (378, 344301), (387, 336294), (459, 283542), (471, 276318), (567, 229534), (602, 216189), (714, 182277), (731, 178038), (774, 168147), (903, 144126), (918, 141771), (942, 138159), (1071, 121518), (1099, 118422), (1134, 114767), (1161, 112098), (1377, 94514), (1413, 92106), (1462, 89019), (1806, 72063), (2142, 60759), (2193, 59346), (2198, 59211), (2322, 56049), (2669, 48762), (2709, 48042), (2754, 47257), (2826, 46053), (3213, 40506), (3297, 39474), (3483, 37366), (4239, 30702), (4386, 29673), (5117, 25434), (5338, 24381), (5418, 24021), (6426, 20253), (6579, 19782), (6594, 19737), (6751, 19278), (6966, 18683), (8007, 16254), (8127, 16014), (8478, 15351), (9639, 13502), (9891, 13158), (10234, 12717)]