661245981

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 1026984960

約数和(自身を除く): 365738979

約数列:

[1, 3, 11, 33, 37, 59, 67, 111, 137, 177, 201, 407, 411, 649, 737, 1221, 1507, 1947, 2183, 2211, 2479, 3953, 4521, 5069, 6549, 7437, 8083, 9179, 11859, 15207, 24013, 24249, 27269, 27537, 43483, 55759, 72039, 81807, 88913, 100969, 130449, 146261, 167277, 266739, 299071, 302907, 339623, 438783, 541561, 897213, 1018869, 1608871, 1624683, 3289781, 3735853, 4826613, 5957171, 9869343, 11207559, 17871513, 20037757, 60113271, 220415327, 661245981]

約数ペア:

[(1, 661245981), (3, 220415327), (11, 60113271), (33, 20037757), (37, 17871513), (59, 11207559), (67, 9869343), (111, 5957171), (137, 4826613), (177, 3735853), (201, 3289781), (407, 1624683), (411, 1608871), (649, 1018869), (737, 897213), (1221, 541561), (1507, 438783), (1947, 339623), (2183, 302907), (2211, 299071), (2479, 266739), (3953, 167277), (4521, 146261), (5069, 130449), (6549, 100969), (7437, 88913), (8083, 81807), (9179, 72039), (11859, 55759), (15207, 43483), (24013, 27537), (24249, 27269)]