64639840

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{13931}}^1$

素因数の和:13975

約数の個数: 48

約数和(自身を含む): 157988880

約数和(自身を除く): 93349040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4640, 13931, 27862, 55724, 69655, 111448, 139310, 222896, 278620, 403999, 445792, 557240, 807998, 1114480, 1615996, 2019995, 2228960, 3231992, 4039990, 6463984, 8079980, 12927968, 16159960, 32319920, 64639840]

約数ペア:

[(1, 64639840), (2, 32319920), (4, 16159960), (5, 12927968), (8, 8079980), (10, 6463984), (16, 4039990), (20, 3231992), (29, 2228960), (32, 2019995), (40, 1615996), (58, 1114480), (80, 807998), (116, 557240), (145, 445792), (160, 403999), (232, 278620), (290, 222896), (464, 139310), (580, 111448), (928, 69655), (1160, 55724), (2320, 27862), (4640, 13931)]