19918460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:147

約数の個数: 96

約数和(自身を含む): 47900160

約数和(自身を除く): 27981700

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 43, 46, 53, 76, 86, 92, 95, 106, 115, 172, 190, 212, 215, 230, 265, 380, 430, 437, 460, 530, 817, 860, 874, 989, 1007, 1060, 1219, 1634, 1748, 1978, 2014, 2185, 2279, 2438, 3268, 3956, 4028, 4085, 4370, 4558, 4876, 4945, 5035, 6095, 8170, 8740, 9116, 9890, 10070, 11395, 12190, 16340, 18791, 19780, 20140, 22790, 23161, 24380, 37582, 43301, 45580, 46322, 52417, 75164, 86602, 92644, 93955, 104834, 115805, 173204, 187910, 209668, 216505, 231610, 262085, 375820, 433010, 463220, 524170, 866020, 995923, 1048340, 1991846, 3983692, 4979615, 9959230, 19918460]

約数ペア:

[(1, 19918460), (2, 9959230), (4, 4979615), (5, 3983692), (10, 1991846), (19, 1048340), (20, 995923), (23, 866020), (38, 524170), (43, 463220), (46, 433010), (53, 375820), (76, 262085), (86, 231610), (92, 216505), (95, 209668), (106, 187910), (115, 173204), (172, 115805), (190, 104834), (212, 93955), (215, 92644), (230, 86602), (265, 75164), (380, 52417), (430, 46322), (437, 45580), (460, 43301), (530, 37582), (817, 24380), (860, 23161), (874, 22790), (989, 20140), (1007, 19780), (1060, 18791), (1219, 16340), (1634, 12190), (1748, 11395), (1978, 10070), (2014, 9890), (2185, 9116), (2279, 8740), (2438, 8170), (3268, 6095), (3956, 5035), (4028, 4945), (4085, 4876), (4370, 4558)]