19936280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5477}}^1$

素因数の和:5508

約数の個数: 64

約数和(自身を含む): 55218240

約数和(自身を除く): 35281960

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5477, 10954, 21908, 27385, 38339, 43816, 54770, 71201, 76678, 109540, 142402, 153356, 191695, 219080, 284804, 306712, 356005, 383390, 498407, 569608, 712010, 766780, 996814, 1424020, 1533560, 1993628, 2492035, 2848040, 3987256, 4984070, 9968140, 19936280]

約数ペア:

[(1, 19936280), (2, 9968140), (4, 4984070), (5, 3987256), (7, 2848040), (8, 2492035), (10, 1993628), (13, 1533560), (14, 1424020), (20, 996814), (26, 766780), (28, 712010), (35, 569608), (40, 498407), (52, 383390), (56, 356005), (65, 306712), (70, 284804), (91, 219080), (104, 191695), (130, 153356), (140, 142402), (182, 109540), (260, 76678), (280, 71201), (364, 54770), (455, 43816), (520, 38339), (728, 27385), (910, 21908), (1820, 10954), (3640, 5477)]