201621255

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{881}}^1$

素因数の和:992

約数の個数: 64

約数和(自身を含む): 375943680

約数和(自身を除く): 174322425

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 73, 95, 165, 209, 219, 285, 365, 627, 803, 881, 1045, 1095, 1387, 2409, 2643, 3135, 4015, 4161, 4405, 6935, 9691, 12045, 13215, 15257, 16739, 20805, 29073, 45771, 48455, 50217, 64313, 76285, 83695, 145365, 184129, 192939, 228855, 251085, 321565, 552387, 707443, 920645, 964695, 1221947, 2122329, 2761935, 3537215, 3665841, 6109735, 10611645, 13441417, 18329205, 40324251, 67207085, 201621255]

約数ペア:

[(1, 201621255), (3, 67207085), (5, 40324251), (11, 18329205), (15, 13441417), (19, 10611645), (33, 6109735), (55, 3665841), (57, 3537215), (73, 2761935), (95, 2122329), (165, 1221947), (209, 964695), (219, 920645), (285, 707443), (365, 552387), (627, 321565), (803, 251085), (881, 228855), (1045, 192939), (1095, 184129), (1387, 145365), (2409, 83695), (2643, 76285), (3135, 64313), (4015, 50217), (4161, 48455), (4405, 45771), (6935, 29073), (9691, 20805), (12045, 16739), (13215, 15257)]