19495905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 37497600

約数和(自身を除く): 18001695

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 61, 65, 143, 149, 165, 183, 195, 305, 429, 447, 671, 715, 745, 793, 915, 1639, 1937, 2013, 2145, 2235, 2379, 3355, 3965, 4917, 5811, 8195, 8723, 9089, 9685, 10065, 11895, 21307, 24585, 26169, 27267, 29055, 43615, 45445, 63921, 99979, 106535, 118157, 130845, 136335, 299937, 319605, 354471, 499895, 590785, 1299727, 1499685, 1772355, 3899181, 6498635, 19495905]

約数ペア:

[(1, 19495905), (3, 6498635), (5, 3899181), (11, 1772355), (13, 1499685), (15, 1299727), (33, 590785), (39, 499895), (55, 354471), (61, 319605), (65, 299937), (143, 136335), (149, 130845), (165, 118157), (183, 106535), (195, 99979), (305, 63921), (429, 45445), (447, 43615), (671, 29055), (715, 27267), (745, 26169), (793, 24585), (915, 21307), (1639, 11895), (1937, 10065), (2013, 9685), (2145, 9089), (2235, 8723), (2379, 8195), (3355, 5811), (3965, 4917)]