21861495

素因数分解:

$3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{947}}^1$

素因数の和:986

約数の個数: 48

約数和(自身を含む): 41408640

約数和(自身を除く): 19547145

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 243, 285, 405, 513, 855, 947, 1215, 1539, 2565, 2841, 4617, 4735, 7695, 8523, 14205, 17993, 23085, 25569, 42615, 53979, 76707, 89965, 127845, 161937, 230121, 269895, 383535, 485811, 809685, 1150605, 1457433, 2429055, 4372299, 7287165, 21861495]

約数ペア:

[(1, 21861495), (3, 7287165), (5, 4372299), (9, 2429055), (15, 1457433), (19, 1150605), (27, 809685), (45, 485811), (57, 383535), (81, 269895), (95, 230121), (135, 161937), (171, 127845), (243, 89965), (285, 76707), (405, 53979), (513, 42615), (855, 25569), (947, 23085), (1215, 17993), (1539, 14205), (2565, 8523), (2841, 7695), (4617, 4735)]