21000852500

素因数分解:

$2^2\times 5^4\times {\mathrm{53}}^1\times {\mathrm{353}}^1\times {\mathrm{449}}^1$

素因数の和:879

約数の個数: 120

約数和(自身を含む): 47028227400

約数和(自身を除く): 26027374900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 125, 212, 250, 265, 353, 449, 500, 530, 625, 706, 898, 1060, 1250, 1325, 1412, 1765, 1796, 2245, 2500, 2650, 3530, 4490, 5300, 6625, 7060, 8825, 8980, 11225, 13250, 17650, 18709, 22450, 23797, 26500, 33125, 35300, 37418, 44125, 44900, 47594, 56125, 66250, 74836, 88250, 93545, 95188, 112250, 118985, 132500, 158497, 176500, 187090, 220625, 224500, 237970, 280625, 316994, 374180, 441250, 467725, 475940, 561250, 594925, 633988, 792485, 882500, 935450, 1122500, 1189850, 1584970, 1870900, 2338625, 2379700, 2974625, 3169940, 3962425, 4677250, 5949250, 7924850, 8400341, 9354500, 11693125, 11898500, 14873125, 15849700, 16800682, 19812125, 23386250, 29746250, 33601364, 39624250, 42001705, 46772500, 59492500, 79248500, 84003410, 99060625, 168006820, 198121250, 210008525, 396242500, 420017050, 840034100, 1050042625, 2100085250, 4200170500, 5250213125, 10500426250, 21000852500]

約数ペア:

[(1, 21000852500), (2, 10500426250), (4, 5250213125), (5, 4200170500), (10, 2100085250), (20, 1050042625), (25, 840034100), (50, 420017050), (53, 396242500), (100, 210008525), (106, 198121250), (125, 168006820), (212, 99060625), (250, 84003410), (265, 79248500), (353, 59492500), (449, 46772500), (500, 42001705), (530, 39624250), (625, 33601364), (706, 29746250), (898, 23386250), (1060, 19812125), (1250, 16800682), (1325, 15849700), (1412, 14873125), (1765, 11898500), (1796, 11693125), (2245, 9354500), (2500, 8400341), (2650, 7924850), (3530, 5949250), (4490, 4677250), (5300, 3962425), (6625, 3169940), (7060, 2974625), (8825, 2379700), (8980, 2338625), (11225, 1870900), (13250, 1584970), (17650, 1189850), (18709, 1122500), (22450, 935450), (23797, 882500), (26500, 792485), (33125, 633988), (35300, 594925), (37418, 561250), (44125, 475940), (44900, 467725), (47594, 441250), (56125, 374180), (66250, 316994), (74836, 280625), (88250, 237970), (93545, 224500), (95188, 220625), (112250, 187090), (118985, 176500), (132500, 158497)]