257795070

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{21323}}^1$

素因数の和:21377

約数の個数: 64

約数和(自身を含む): 687826944

約数和(自身を除く): 430031874

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 31, 39, 62, 65, 78, 93, 130, 155, 186, 195, 310, 390, 403, 465, 806, 930, 1209, 2015, 2418, 4030, 6045, 12090, 21323, 42646, 63969, 106615, 127938, 213230, 277199, 319845, 554398, 639690, 661013, 831597, 1322026, 1385995, 1663194, 1983039, 2771990, 3305065, 3966078, 4157985, 6610130, 8315970, 8593169, 9915195, 17186338, 19830390, 25779507, 42965845, 51559014, 85931690, 128897535, 257795070]

約数ペア:

[(1, 257795070), (2, 128897535), (3, 85931690), (5, 51559014), (6, 42965845), (10, 25779507), (13, 19830390), (15, 17186338), (26, 9915195), (30, 8593169), (31, 8315970), (39, 6610130), (62, 4157985), (65, 3966078), (78, 3305065), (93, 2771990), (130, 1983039), (155, 1663194), (186, 1385995), (195, 1322026), (310, 831597), (390, 661013), (403, 639690), (465, 554398), (806, 319845), (930, 277199), (1209, 213230), (2015, 127938), (2418, 106615), (4030, 63969), (6045, 42646), (12090, 21323)]