20920340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:201

約数の個数: 96

約数和(自身を含む): 53706240

約数和(自身を除く): 32785900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 73, 89, 92, 115, 140, 146, 161, 178, 230, 292, 322, 356, 365, 445, 460, 511, 623, 644, 730, 805, 890, 1022, 1246, 1460, 1610, 1679, 1780, 2044, 2047, 2492, 2555, 3115, 3220, 3358, 4094, 5110, 6230, 6497, 6716, 8188, 8395, 10220, 10235, 11753, 12460, 12994, 14329, 16790, 20470, 23506, 25988, 28658, 32485, 33580, 40940, 45479, 47012, 57316, 58765, 64970, 71645, 90958, 117530, 129940, 143290, 149431, 181916, 227395, 235060, 286580, 298862, 454790, 597724, 747155, 909580, 1046017, 1494310, 2092034, 2988620, 4184068, 5230085, 10460170, 20920340]

約数ペア:

[(1, 20920340), (2, 10460170), (4, 5230085), (5, 4184068), (7, 2988620), (10, 2092034), (14, 1494310), (20, 1046017), (23, 909580), (28, 747155), (35, 597724), (46, 454790), (70, 298862), (73, 286580), (89, 235060), (92, 227395), (115, 181916), (140, 149431), (146, 143290), (161, 129940), (178, 117530), (230, 90958), (292, 71645), (322, 64970), (356, 58765), (365, 57316), (445, 47012), (460, 45479), (511, 40940), (623, 33580), (644, 32485), (730, 28658), (805, 25988), (890, 23506), (1022, 20470), (1246, 16790), (1460, 14329), (1610, 12994), (1679, 12460), (1780, 11753), (2044, 10235), (2047, 10220), (2492, 8395), (2555, 8188), (3115, 6716), (3220, 6497), (3358, 6230), (4094, 5110)]