19853505

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:220

約数の個数: 80

約数和(自身を含む): 41817600

約数和(自身を除く): 21964095

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 47, 63, 81, 105, 135, 141, 149, 189, 235, 315, 329, 405, 423, 447, 567, 705, 745, 945, 987, 1043, 1269, 1341, 1645, 2115, 2235, 2835, 2961, 3129, 3807, 4023, 4935, 5215, 6345, 6705, 7003, 8883, 9387, 12069, 14805, 15645, 19035, 20115, 21009, 26649, 28161, 35015, 44415, 46935, 49021, 60345, 63027, 84483, 105045, 133245, 140805, 147063, 189081, 245105, 315135, 422415, 441189, 567243, 735315, 945405, 1323567, 2205945, 2836215, 3970701, 6617835, 19853505]

約数ペア:

[(1, 19853505), (3, 6617835), (5, 3970701), (7, 2836215), (9, 2205945), (15, 1323567), (21, 945405), (27, 735315), (35, 567243), (45, 441189), (47, 422415), (63, 315135), (81, 245105), (105, 189081), (135, 147063), (141, 140805), (149, 133245), (189, 105045), (235, 84483), (315, 63027), (329, 60345), (405, 49021), (423, 46935), (447, 44415), (567, 35015), (705, 28161), (745, 26649), (945, 21009), (987, 20115), (1043, 19035), (1269, 15645), (1341, 14805), (1645, 12069), (2115, 9387), (2235, 8883), (2835, 7003), (2961, 6705), (3129, 6345), (3807, 5215), (4023, 4935)]