19902714

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 44997120

約数和(自身を除く): 25094406

約数列:

[1, 2, 3, 6, 13, 26, 39, 47, 61, 78, 89, 94, 122, 141, 178, 183, 267, 282, 366, 534, 611, 793, 1157, 1222, 1586, 1833, 2314, 2379, 2867, 3471, 3666, 4183, 4758, 5429, 5734, 6942, 8366, 8601, 10858, 12549, 16287, 17202, 25098, 32574, 37271, 54379, 70577, 74542, 108758, 111813, 141154, 163137, 211731, 223626, 255163, 326274, 423462, 510326, 765489, 1530978, 3317119, 6634238, 9951357, 19902714]

約数ペア:

[(1, 19902714), (2, 9951357), (3, 6634238), (6, 3317119), (13, 1530978), (26, 765489), (39, 510326), (47, 423462), (61, 326274), (78, 255163), (89, 223626), (94, 211731), (122, 163137), (141, 141154), (178, 111813), (183, 108758), (267, 74542), (282, 70577), (366, 54379), (534, 37271), (611, 32574), (793, 25098), (1157, 17202), (1222, 16287), (1586, 12549), (1833, 10858), (2314, 8601), (2379, 8366), (2867, 6942), (3471, 5734), (3666, 5429), (4183, 4758)]