645638530

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{271}}^1$

素因数の和:499

約数の個数: 64

約数和(自身を含む): 1232381952

約数和(自身を除く): 586743422

約数列:

[1, 2, 5, 10, 37, 47, 74, 94, 137, 185, 235, 271, 274, 370, 470, 542, 685, 1355, 1370, 1739, 2710, 3478, 5069, 6439, 8695, 10027, 10138, 12737, 12878, 17390, 20054, 25345, 25474, 32195, 37127, 50135, 50690, 63685, 64390, 74254, 100270, 127370, 185635, 238243, 371270, 471269, 476486, 942538, 1191215, 1373699, 1744969, 2356345, 2382430, 2747398, 3489938, 4712690, 6868495, 8724845, 13736990, 17449690, 64563853, 129127706, 322819265, 645638530]

約数ペア:

[(1, 645638530), (2, 322819265), (5, 129127706), (10, 64563853), (37, 17449690), (47, 13736990), (74, 8724845), (94, 6868495), (137, 4712690), (185, 3489938), (235, 2747398), (271, 2382430), (274, 2356345), (370, 1744969), (470, 1373699), (542, 1191215), (685, 942538), (1355, 476486), (1370, 471269), (1739, 371270), (2710, 238243), (3478, 185635), (5069, 127370), (6439, 100270), (8695, 74254), (10027, 64390), (10138, 63685), (12737, 50690), (12878, 50135), (17390, 37127), (20054, 32195), (25345, 25474)]