19654020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{797}}^1$

素因数の和:949

約数の個数: 72

約数和(自身を含む): 60127704

約数和(自身を除く): 40473684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 137, 180, 274, 411, 548, 685, 797, 822, 1233, 1370, 1594, 1644, 2055, 2391, 2466, 2740, 3188, 3985, 4110, 4782, 4932, 6165, 7173, 7970, 8220, 9564, 11955, 12330, 14346, 15940, 23910, 24660, 28692, 35865, 47820, 71730, 109189, 143460, 218378, 327567, 436756, 545945, 655134, 982701, 1091890, 1310268, 1637835, 1965402, 2183780, 3275670, 3930804, 4913505, 6551340, 9827010, 19654020]

約数ペア:

[(1, 19654020), (2, 9827010), (3, 6551340), (4, 4913505), (5, 3930804), (6, 3275670), (9, 2183780), (10, 1965402), (12, 1637835), (15, 1310268), (18, 1091890), (20, 982701), (30, 655134), (36, 545945), (45, 436756), (60, 327567), (90, 218378), (137, 143460), (180, 109189), (274, 71730), (411, 47820), (548, 35865), (685, 28692), (797, 24660), (822, 23910), (1233, 15940), (1370, 14346), (1594, 12330), (1644, 11955), (2055, 9564), (2391, 8220), (2466, 7970), (2740, 7173), (3188, 6165), (3985, 4932), (4110, 4782)]