249969460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{15761}}^1$

素因数の和:15844

約数の個数: 48

約数和(自身を含む): 574619472

約数和(自身を除く): 324650012

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 7930, 15761, 15860, 31522, 63044, 78805, 157610, 204893, 315220, 409786, 819572, 961421, 1024465, 1922842, 2048930, 3845684, 4097860, 4807105, 9614210, 12498473, 19228420, 24996946, 49993892, 62492365, 124984730, 249969460]

約数ペア:

[(1, 249969460), (2, 124984730), (4, 62492365), (5, 49993892), (10, 24996946), (13, 19228420), (20, 12498473), (26, 9614210), (52, 4807105), (61, 4097860), (65, 3845684), (122, 2048930), (130, 1922842), (244, 1024465), (260, 961421), (305, 819572), (610, 409786), (793, 315220), (1220, 204893), (1586, 157610), (3172, 78805), (3965, 63044), (7930, 31522), (15761, 15860)]