20998833478

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1\times {\mathrm{823}}^1$

素因数の和:1122

約数の個数: 96

約数和(自身を含む): 39362941440

約数和(自身を除く): 18364107962

約数列:

[1, 2, 7, 14, 19, 38, 49, 71, 98, 133, 142, 193, 266, 386, 497, 823, 931, 994, 1349, 1351, 1646, 1862, 2698, 2702, 3479, 3667, 5761, 6958, 7334, 9443, 9457, 11522, 13703, 15637, 18886, 18914, 25669, 27406, 31274, 40327, 51338, 58433, 66101, 80654, 95921, 109459, 116866, 132202, 158839, 179683, 191842, 218918, 260357, 317678, 359366, 409031, 520714, 671447, 766213, 818062, 1110227, 1111873, 1342894, 1532426, 1822499, 2220454, 2223746, 2863217, 3017941, 3644998, 5726434, 6035882, 7771589, 7783111, 11277569, 12757493, 15543178, 15566222, 21125587, 22555138, 25514986, 42251174, 54401123, 78942983, 108802246, 147879109, 157885966, 214273811, 295758218, 428547622, 552600881, 1105201762, 1499916677, 2999833354, 10499416739, 20998833478]

約数ペア:

[(1, 20998833478), (2, 10499416739), (7, 2999833354), (14, 1499916677), (19, 1105201762), (38, 552600881), (49, 428547622), (71, 295758218), (98, 214273811), (133, 157885966), (142, 147879109), (193, 108802246), (266, 78942983), (386, 54401123), (497, 42251174), (823, 25514986), (931, 22555138), (994, 21125587), (1349, 15566222), (1351, 15543178), (1646, 12757493), (1862, 11277569), (2698, 7783111), (2702, 7771589), (3479, 6035882), (3667, 5726434), (5761, 3644998), (6958, 3017941), (7334, 2863217), (9443, 2223746), (9457, 2220454), (11522, 1822499), (13703, 1532426), (15637, 1342894), (18886, 1111873), (18914, 1110227), (25669, 818062), (27406, 766213), (31274, 671447), (40327, 520714), (51338, 409031), (58433, 359366), (66101, 317678), (80654, 260357), (95921, 218918), (109459, 191842), (116866, 179683), (132202, 158839)]