19512220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 51480576

約数和(自身を除く): 31968356

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 71, 91, 130, 140, 142, 151, 182, 260, 284, 302, 355, 364, 455, 497, 604, 710, 755, 910, 923, 994, 1057, 1420, 1510, 1820, 1846, 1963, 1988, 2114, 2485, 3020, 3692, 3926, 4228, 4615, 4970, 5285, 6461, 7852, 9230, 9815, 9940, 10570, 10721, 12922, 13741, 18460, 19630, 21140, 21442, 25844, 27482, 32305, 39260, 42884, 53605, 54964, 64610, 68705, 75047, 107210, 129220, 137410, 139373, 150094, 214420, 274820, 278746, 300188, 375235, 557492, 696865, 750470, 975611, 1393730, 1500940, 1951222, 2787460, 3902444, 4878055, 9756110, 19512220]

約数ペア:

[(1, 19512220), (2, 9756110), (4, 4878055), (5, 3902444), (7, 2787460), (10, 1951222), (13, 1500940), (14, 1393730), (20, 975611), (26, 750470), (28, 696865), (35, 557492), (52, 375235), (65, 300188), (70, 278746), (71, 274820), (91, 214420), (130, 150094), (140, 139373), (142, 137410), (151, 129220), (182, 107210), (260, 75047), (284, 68705), (302, 64610), (355, 54964), (364, 53605), (455, 42884), (497, 39260), (604, 32305), (710, 27482), (755, 25844), (910, 21442), (923, 21140), (994, 19630), (1057, 18460), (1420, 13741), (1510, 12922), (1820, 10721), (1846, 10570), (1963, 9940), (1988, 9815), (2114, 9230), (2485, 7852), (3020, 6461), (3692, 5285), (3926, 4970), (4228, 4615)]