20987856

素因数分解:

$2^4\times 3^3\times {\mathrm{19}}^1\times {\mathrm{2557}}^1$

素因数の和:2593

約数の個数: 80

約数和(自身を含む): 63438400

約数和(自身を除く): 42450544

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 27, 36, 38, 48, 54, 57, 72, 76, 108, 114, 144, 152, 171, 216, 228, 304, 342, 432, 456, 513, 684, 912, 1026, 1368, 2052, 2557, 2736, 4104, 5114, 7671, 8208, 10228, 15342, 20456, 23013, 30684, 40912, 46026, 48583, 61368, 69039, 92052, 97166, 122736, 138078, 145749, 184104, 194332, 276156, 291498, 368208, 388664, 437247, 552312, 582996, 777328, 874494, 1104624, 1165992, 1311741, 1748988, 2331984, 2623482, 3497976, 5246964, 6995952, 10493928, 20987856]

約数ペア:

[(1, 20987856), (2, 10493928), (3, 6995952), (4, 5246964), (6, 3497976), (8, 2623482), (9, 2331984), (12, 1748988), (16, 1311741), (18, 1165992), (19, 1104624), (24, 874494), (27, 777328), (36, 582996), (38, 552312), (48, 437247), (54, 388664), (57, 368208), (72, 291498), (76, 276156), (108, 194332), (114, 184104), (144, 145749), (152, 138078), (171, 122736), (216, 97166), (228, 92052), (304, 69039), (342, 61368), (432, 48583), (456, 46026), (513, 40912), (684, 30684), (912, 23013), (1026, 20456), (1368, 15342), (2052, 10228), (2557, 8208), (2736, 7671), (4104, 5114)]