19781580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3623}}^1$

素因数の和:3655

約数の個数: 96

約数和(自身を含む): 68189184

約数和(自身を除く): 48407604

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 182, 195, 210, 260, 273, 364, 390, 420, 455, 546, 780, 910, 1092, 1365, 1820, 2730, 3623, 5460, 7246, 10869, 14492, 18115, 21738, 25361, 36230, 43476, 47099, 50722, 54345, 72460, 76083, 94198, 101444, 108690, 126805, 141297, 152166, 188396, 217380, 235495, 253610, 282594, 304332, 329693, 380415, 470990, 507220, 565188, 659386, 706485, 760830, 941980, 989079, 1318772, 1412970, 1521660, 1648465, 1978158, 2825940, 3296930, 3956316, 4945395, 6593860, 9890790, 19781580]

約数ペア:

[(1, 19781580), (2, 9890790), (3, 6593860), (4, 4945395), (5, 3956316), (6, 3296930), (7, 2825940), (10, 1978158), (12, 1648465), (13, 1521660), (14, 1412970), (15, 1318772), (20, 989079), (21, 941980), (26, 760830), (28, 706485), (30, 659386), (35, 565188), (39, 507220), (42, 470990), (52, 380415), (60, 329693), (65, 304332), (70, 282594), (78, 253610), (84, 235495), (91, 217380), (105, 188396), (130, 152166), (140, 141297), (156, 126805), (182, 108690), (195, 101444), (210, 94198), (260, 76083), (273, 72460), (364, 54345), (390, 50722), (420, 47099), (455, 43476), (546, 36230), (780, 25361), (910, 21738), (1092, 18115), (1365, 14492), (1820, 10869), (2730, 7246), (3623, 5460)]