19802490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 29963910

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 107, 155, 186, 199, 214, 310, 321, 398, 465, 535, 597, 642, 930, 995, 1070, 1194, 1605, 1990, 2985, 3210, 3317, 5970, 6169, 6634, 9951, 12338, 16585, 18507, 19902, 21293, 30845, 33170, 37014, 42586, 49755, 61690, 63879, 92535, 99510, 106465, 127758, 185070, 212930, 319395, 638790, 660083, 1320166, 1980249, 3300415, 3960498, 6600830, 9901245, 19802490]

約数ペア:

[(1, 19802490), (2, 9901245), (3, 6600830), (5, 3960498), (6, 3300415), (10, 1980249), (15, 1320166), (30, 660083), (31, 638790), (62, 319395), (93, 212930), (107, 185070), (155, 127758), (186, 106465), (199, 99510), (214, 92535), (310, 63879), (321, 61690), (398, 49755), (465, 42586), (535, 37014), (597, 33170), (642, 30845), (930, 21293), (995, 19902), (1070, 18507), (1194, 16585), (1605, 12338), (1990, 9951), (2985, 6634), (3210, 6169), (3317, 5970)]