19975284

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2557}}^1$

素因数の和:2605

約数の個数: 72

約数和(自身を含む): 59591168

約数和(自身を除く): 39615884

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 186, 217, 252, 279, 372, 434, 558, 651, 868, 1116, 1302, 1953, 2557, 2604, 3906, 5114, 7671, 7812, 10228, 15342, 17899, 23013, 30684, 35798, 46026, 53697, 71596, 79267, 92052, 107394, 158534, 161091, 214788, 237801, 317068, 322182, 475602, 554869, 644364, 713403, 951204, 1109738, 1426806, 1664607, 2219476, 2853612, 3329214, 4993821, 6658428, 9987642, 19975284]

約数ペア:

[(1, 19975284), (2, 9987642), (3, 6658428), (4, 4993821), (6, 3329214), (7, 2853612), (9, 2219476), (12, 1664607), (14, 1426806), (18, 1109738), (21, 951204), (28, 713403), (31, 644364), (36, 554869), (42, 475602), (62, 322182), (63, 317068), (84, 237801), (93, 214788), (124, 161091), (126, 158534), (186, 107394), (217, 92052), (252, 79267), (279, 71596), (372, 53697), (434, 46026), (558, 35798), (651, 30684), (868, 23013), (1116, 17899), (1302, 15342), (1953, 10228), (2557, 7812), (2604, 7671), (3906, 5114)]