320779940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{39799}}^1$

素因数の和:39852

約数の個数: 48

約数和(自身を含む): 748876800

約数和(自身を除く): 428096860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 39799, 79598, 159196, 198995, 397990, 517387, 795980, 1034774, 1233769, 2069548, 2467538, 2586935, 4935076, 5173870, 6168845, 10347740, 12337690, 16038997, 24675380, 32077994, 64155988, 80194985, 160389970, 320779940]

約数ペア:

[(1, 320779940), (2, 160389970), (4, 80194985), (5, 64155988), (10, 32077994), (13, 24675380), (20, 16038997), (26, 12337690), (31, 10347740), (52, 6168845), (62, 5173870), (65, 4935076), (124, 2586935), (130, 2467538), (155, 2069548), (260, 1233769), (310, 1034774), (403, 795980), (620, 517387), (806, 397990), (1612, 198995), (2015, 159196), (4030, 79598), (8060, 39799)]